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

1. (8,42)

2. (24,36)

3. (40,30)

Step-by-step explanation:

In order to solve this problem we will assume some values of x which will give us integer values of y.

Substituting x=8 in our equation we will get,

Substituting x=24 in our equation we get,

Substituting x = 40 in the equation we get,

Therefore, our three combinations will be (8,42), (24,36) and (40,30).

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.