7. The straight line depreciation equation for a car is y = -2,750x + 22,000.
a. What is the car worth after 5 years?
b. What is the car worth after 8 years?

A. -13,750

B. 22,000

Step-by-step explanation:

A. times 5

B. times 8

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation:

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.