1. Sandra buys a car for $12,700 and it depreciates
15% per year. How much will her car be worth in 4
years?

$6629.47

Step-by-step explanation:

year 1 = -$1905

year 2 = -$1619.25

year 3 = -$1376.36

year 4 = -$1169.90

subtract 15% from each year, not from the starting year.

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is