1.
When Kristin works 8 hours, she earns $60. When she works 20 hours, she earns $150. Write a linear equation that describes her earnings. Assume that the changes increase linearly.
A.
B.
C.
D.
Hint
2.
Which equation describes the line that contains the points (-5, 2) and (3, 7)?
A.
B.
C.
D.
Hint
3.
Which equation describes the line that contains the points (-1, -8) and (-9, -21)?
A.
B.
C.
D.
Hint
4.
A rental car company charges $75 for a 3-day rental and $155 for a 7-day rental. Write an equation to find the amount that the rental car company will charge for any number of days.
A.
y
= 80
x
– 165
B.
y
= 20
x
C.
y
= 20
x
+ 15
D.
y
= 80
x
Hint
5.
A phone company charges for service as follows: they charge a certain amount for a visit, and then they charge a certain amount per hour after that. If a three-hour service visit costs $220, and a job that takes an hour and a half costs $145, how much is the cost of a visit before the amount of time spent is factored in?
A.
$25
B.
$50
C.
$70
D.
$217
Hint