susan evaluated the following expression and got 2. is her answer correct? justify your answer....
TRANSCRIPT
Susan evaluated the following expression and got 2. Is her answer correct? Justify your
answer.
Evaluate if m = 6 & n = 4m2 ÷ n -162 ÷ 4 -112 ÷ 4 -1
3 – 12
Susan evaluated the following expression and got 2. Is her answer correct? No, 62 = 36,
Evaluate if m = 6 & n = 4m2 ÷ n -162 ÷ 4 -136 ÷ 4 -1
9 – 18
Which statement is TRUE about the equation y=2x+1?
a) y is the independent variable.
b) x is the independent variable.
c) Both x & y are independent variables.
d) Both x & y are dependent variables.
Which statement is TRUE about the equation y=2x+1?
b) x is the independent variable.
Remember: X can stand alone (independent) because it has 2 legs. Y needs help (dependent) because it has only 1 leg.
Which sentence is true?a) |-10| > |7|b) |-8| < |-2|c) |5| < |-1|d) |-4| > |-6|
a) |-10| > |7|
Which expression is NOT equivalent to 4k + 12?
a) 3k + 4 + k + 8b) 3(k+3) +3c) 4(k+3)d) 2(2k + 5) + 2
Which expression is NOT equivalent to 4k + 12?
b) 3(k+3) +3 3k + 9 + 3 = 3k + 12
The equation ¼d = 12 can be used to find how many trophies Dawn has. How many trophies does she have?a) 3 b) 16 c) 44 d) 48
d) 48
Which expression represents seven less than five times a number?a) 5 – 7ab) 7a – 5c) 7 – 5ad) 5a - 7
Which expression represents seven less than five times a number?
d) 5a - 7
What is the coefficient in the expression (3 x 5) + 4x?
a) x b) 3 c) 4 d) 5
What is the coefficient in the expression (3 x 5) + 4x?
c) 4
What is the range for the
scores 3, 1, 5, 7, 11, 9?
11 – 1 = 10range – the difference
between the highest and the lowest number
Judith purchased candy bars for 50 cents each.
Which expression represents how much she
paid for c candy bars? a) 0.50/c b) 0.50 + c c) 0.50 - c d) 0.50c
d) 0.50c
8
4
12
What is the least number of bags of potato chips you should buy to
have the same number of hot dogs, buns, and chips?
LCM = 24
Since there are 12 chips per bag, you should purchase 2 bags of
chips.
24 cups of Kool-Aid makes how
many gallons?
24 cups = 12 pints
12 pints = 6 quarts
6 quarts = 1.5 gal.
What is the mode for the
numbers below?12, 11, 15, 11, 7,
13
mode = “most”11 occurs twice
Write the equation for the direct variation represented below.
x y
1 12
2 24
3 36
4 48
y = 12x
x y k = y/x
1 12 12/1 = 12
2 24 24/2 = 12
3 36 36/3 = 12
4 48 48/4 = 12
What is the greatest
common factor of 32 and 40.
8
A triangular sail has two sides that meet at a right angle. Both sides are 9 yards long. what is the area of the sail?a) 40.5 ft2
b) 45 ft2
c) 81 ft2
d) 162 ft2
A triangular sail has two sides that meet at a right angle. Both sides are 9 yards long. what is the area of the sail?A = ½bhA = ½(9)(9)A = ½(81)a) 40.5 ft2
9 ft
9 ft
We sold 86% of the 200 pencils ordered. How many were
sold?
•
Which value occurred most often in group
B?
2
Which inequality best represents this phrase?a number greater than -1a)x > -1b)x < -1c)x ≥ -1d)x ≤ -1
Which inequality best represents this phrase?a number greater than -1a)x > -1
y represents raisins and x represents peanuts.
If there are 14 peanuts in a bag, how many raisins
are there?
xy2
3
y represents raisins and x represents peanuts.
If there are 14 peanuts in a bag, how many raisins are there?
)14(2
3y
21y
What is the area of this figure?
6 cm
20 cm
12 cm
6 cm
a) 240 cm2
b) 192 cm2
c) 156 cm2
d) 40 cm2
What is the area of this figure?
6 cm
20 cm
12 cm
6 cm
c) 156 cm2
3
1
6
13
a) 1½b) 1⅛c) 9d) 9½
3
1
6
19
19 3
6 1
2
19d)
•
•
How many customer service ratings above70 did the company receive?
How many customer service ratings did the company receive over70? 12
A wooden board is 3 yards 1 foot long. Which
shows an equivalent length?a)37 ftb)31 ftc)10 ftd)7 ft
A wooden board is 3 yards 1 foot long. Which
shows an equivalent length?1 yd = 3 ft3 yds = 9 ft
c) 10 ft
Julie’s cell phone is 9 centimeters long. How many millimeters is that?
a) 0.9 mmb) 90 mmc) 900 mmd) 9,000 mm
Julie’s cell phone is 9 centimeters long. How many millimeters is that?
b) 90 mm Remember: King Henry Doesn’t Usually Drink Chocolate Milk.
Which of the following is NOT an example of a rate?
a) 2 cups for every 3 cups
b) 120 beats per minutec) 16 ounces for $2d) 8 inches in 12 hours
Which of the following is NOT an example of a rate? Rates must have different units.
a) 2 cups for every 3 cups
b) 120 beats per minutec) 16 ounces for $2d) 8 inches in 12 hours
Solvez – 18 =
234
Solvez – 18 =
234z = 252
Jimmy is driving at a constant speed of 55 miles per hour. At that rate, how long will it take him to drive 275 miles?a)4 hoursb)5 hoursc)6 hoursd)7 hours
Jimmy is driving at a constant speed of 55 miles per hour. At that rate, how long will it take him to drive 275 miles?
b) 5 hours
If Matthew puts 30 mushrooms on 4 pizzas. How many mushrooms
should he put on 12 pizzas?a) 12 mushroomsb) 30 mushroomsc) 90 mushrooms
d) 120 mushrooms
30 mushrooms = x mushrooms 4 pizzas 12 pizzas
c) 90 mushrooms
Meredith raised $890.88 for charity. She divided the amount equally among her sixteen favorite charities. How much did each charity receive?a) $41.61 b) $54.16c) $55.18 d) $55.68
Meredith raised $890.88 for charity. She divided the amount equally among her sixteen favorite charities. How much did each charity receive?a) $41.61 b) $54.16c) $55.18 d) $55.68
According to the histogram below, how many cars get 15 or more miles per gallon?
a)3b)35c) 75d)110
According to the histogram below, how many cars get 15 or more miles per gallon?
c) 75
What is the equation for this line?
1
4321
0
8765
109
2 3 4 5 6 7 8 9 10
What is the equation for this line?
1
4321
0
8765
109
2 3 4 5 6 7 8 9 10
Since k = 2, the equation is y=2x.
70% of what
number is 42?
70% of what number is
42?x
42
100
70
x
42
10
7
60x
•
•
What is the value of y in the following equation?
⅓y = 9a) 3b) 9c) 27d) 81
Which statement is true about the following equation?
y = 4xa) y is the dependent variable.b) x is the dependent variable.c) There is no dependent variable.d) Both x and y are dependent
variables.
Which statement is true about the following equation?
y = 4xa) y is the dependent variable.
Remember: X can stand alone (independent) because it has 2 legs. Y needs help (dependent) because it has only 1 leg.
Which expression is NOT equivalent to 5x + 6?
a) 4x + 7 + x – 1b) 3x + 3 + 2x + 3c) 5(x + 1) + 1d) x(5 + 6)
Which expression is NOT equivalent to 5x + 6?
a) 4x + 7 + x – 1b) 3x + 3 + 2x + 3c) 5(x + 1) + 1d) x(5 + 6)
Multiply: 0.7 x 0.4a)0.28b)2.8c)28d)280
Multiply: 0.7 x 0.4a)0.28
Which of the following does NOT have a unit price of $24 for one sweater?
a) $38 for 2 sweatersb) $72 for 3 sweatersc) $96 for 4 sweatersd) $120 for 5 sweaters
Which of the following does NOT have a unit price of $24 for one sweater?
a) $38 for 2 sweaters = $19 per sweater
•
•
A preschool is required to have a playground of at least 900 square feet. Which of the following would be satisfactory measurements for a playground for the school?a) 30 feet by 32 feetb) 27 feet by 30 feetc) 15 feet by 40 feetd) 10 feet by 80 feet
A preschool is required to have a playground of at least 900 square feet. Which of the following would be satisfactory measurements for a playground for the school?a) 30 feet by 32 feet = 960 square ftb) 27 feet by 30 feetc) 15 feet by 40 feetd) 10 feet by 80 feet
The ratio of boys to girls in a chorus is 5 to 6. Which shows an equivalent ratio?
a) 10 boys to 12 girlsb) 15 boys to 19 girlsc) 20 boys to 25 girlsd) 24 boys to 28 girls
The ratio of boys to girls in a chorus is 5 to 6. Which shows an equivalent ratio?
a) 10 boys to 12 girlsb) 15 boys to 19 girlsc) 20 boys to 25 girlsd) 24 boys to 28 girls
Joseph goes to a fast food restaurant and orders a hamburger for $1.79, fries for $1.39, and a shake for $1.99. What is a reasonable amount to give to the cashier?a) $5.00b) $11.00c) $3.00d) $6.00
Joseph goes to a fast food restaurant and orders a hamburger for $1.79, fries for $1.39, and a shake for $1.99. What is a reasonable amount to give to the cashier?a) $5.00b) $11.00c) $3.00d) $6.00, since the total is $5.17
0.875 written as a fraction is:
a)
b)
c)
d)
87
100
4
5
7
8
22
25
0.875 written as a fraction is:
c) 7
8
What is the area of this figure?
a) 106 square metersb) 96 square metersc) 56 square metersd) 36 square meters
15 m 5 m
8 m8 m
What is the area of this figure?
b) 96 square meters
15 m 5 m
8 m8 m
3 m
7 m
In his last soccer game, Chris made 9 saves and let in 3 goals. What was his ratio of saves to total shots on goal?
a) 3:1b) 4:3c) 3:4d) 1:3
In his last soccer game, Chris made 9 saves and let in 3 goals. What was his ratio of saves to total shots on goal?
c) 3:4 (9 saves:12 total shots on goal)