Quiz about Keystone Review

Question 1

In an experiment, a plant grows 0.05 centimeters per day.  The plant had a height of 2 centimeters when the experiment started.  Which equation describes the relationship between the number of days (d) the experiment lasts and the height (h), in centimeters, of the plant?

Accepted Answer

h=0.05d+2

Answer

h=0.05(2)+d

Answer

h=2d+0.05

Answer

h=2.05d

Question 2

Sylvia studied a new language. The equation below describes how many words she knew (y) after studying the language for x days.
y=5x+18
The ordered pair (6,48) is a solution of the equation. What does the solution represent?

Accepted Answer

Sylvia knew 48 words after 6 days

Answer

Sylvia knew 6 words after 48 days.

Answer

Sylvia knew 6 words after 6 days

Answer

Sylvia knew 48 words after 48 days

Question 3

The graph below shows the relationship between the number of minutes (x) that have passed since an airplane began its decent and height above the ground (y), in feet, of the airplane.
Based on the graph, how long after it starts its decent will the airplane reach a height of 3,000 feet?

Accepted Answer

28 minutes

Answer

14 minutes

Answer

16 minutes

Answer

32 minutes

Question 4

Question 4.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 5

Question 5.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 6

Question 6.

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 7

Question 7.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 8

Question 8.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 9

Jenny has a job that pays her $8 per hour plus tips (t). Jenny worked for 4 hours on Monday and made $65 in all. Which equation could be used to find t, the amount Jenny made in tips?

Accepted Answer

65 = 8(4) + t

Answer

65 = 4t + 8

Answer

65 = 8t / 4

Answer

65 = 8t + 4

Question 10

A die with sides 1-6 is rolled two times, and the sum of the numbers that end face up is calculated. What is the probability that the sum of the numbers is 3?

Accepted Answer

1/18

Answer

1/12

Answer

1/9

Answer

1/2

Question 11

The table below shows the rate charged to park in a parking garage. How much will it cost for the car to be parked for each hour?

Accepted Answer

$1.50

Answer

$0.75

Answer

$1.00

Answer

$1.75

Question 12

Anna goes to a fair. The equation below represents the relationship between the number of rides (x) and the total cost of entering the fair and going on rides (y) -25x + 10y = 30 What is the cost to enter the fair?

Accepted Answer

$3.00

Answer

$2.50

Answer

$25.00

Answer

$30.00

Question 13

What is the median?

Accepted Answer

62

Answer

58

Answer

66

Answer

60

Question 14

Which city, Nashville or Dallas, has the smallest minimum temperature?

Accepted Answer

Nashville

Answer

Dallas

Question 15

What percentage of the data is between 90 and 140?

Accepted Answer

50%

Answer

25 %

Answer

75%

Answer

100%

Question 16

What is the range of the data shown in the stem and leaf plot?

Accepted Answer

56

Answer

40

Answer

136

Answer

96

Question 17

In how many games did the team score more than 20 points?

Accepted Answer

7

Answer

8

Answer

10

Answer

9

Question 18

Solve for y:
3(y + 2) -16 = 8y

Accepted Answer

y = -2

Answer

y = -13/5

Answer

y = 2

Answer

y = -11/5

Question 19

Solve:
x = 2y - 4
5x - 3y = 1

Accepted Answer

(2, 3)

Answer

(-14, -5)

Answer

(-14/13, 19/13)

Answer

(-1, 3)

Question 20

Find the equation of the line shown

Accepted Answer

y = 2x + 4

Answer

y = 4x - 2

Answer

y = -2x + 4

Answer

y = -4x - 2

Question 21

Write the equation of the line that goes through the points (4, 7) and (0, -5)

Accepted Answer

y = 3x - 5

Answer

y = 1/3x + 7

Answer

y = 3x + 7

Answer

y = 1/3x - 5

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