7.5x+20y=900 models how many hours (x) and how many lawns mowed (y) jon has to work in order to save $900. give 3 combinations of hours worked and lawns mowed that result in $900.

ANSWER

EXPLANATION

We chose a value for and substitute in to the equation and solve for .

If Jon works for hour,

Then the equation becomes,

We make the subject

If Jon works for hours,

Then the equation becomes,

We make the subject

If Jon works for hours,

Then the equation becomes,

We make the subject

Therefore three combinations of hours worked and lawns mowed are

answer:     true

step-by-step explanation:

$15 each

step-by-step explanation:

$45/3 children= $15 each