Question

Hiro painted his room. After 3333 hours of painting at a rate of 8888 square meters per hour, he had 28282828 square meters left to paint. Let yyyy represent the area (in square meters) left to paint after xxxx hours. Complete the equation for the relationship between the area and number of hours.

Answer 1

y = 52 - 8x

Explanation:

If he painted for 3 hours at a rate of 8 square meters per hour, the area painted was:

`A_P=8*3=24\ m^2`

If after 24 squared meters painted, there are still 28 left, the total area is:

`A=24+28 = 52\ m^2`

The area still left to paint is initially 52 squared meters and decreases at a rate of 8 square meters per hour, the function that describes the relationship between the area left to paint (y) and number of hours (x) is:

y = 52 - 8x