you figured out that you could make $50 per pool to clean pools during the summer. you did, however, need to purchase some equipment to get started.

Question

After cleaning three pools, you still were down a total of $15.

a) write an equation to represent this situation

b) what is the y-intercept represent AND what does it represent?

c) how much money will you have made after cleaning 12 pools?

Answer 1

Assuming x is the number of pools you have cleaned, the amount of money you can make can be represented by

a) y = 50x - 165 (After cleaning three pools, you were still down $15, this means the equipment costs 3*50 + 15 = $165)

b) The y-intercept -165 is the equipment cost

c) After cleaning 12 pools, y = 600 - 165 = 435. You have made $435.