Question

a construction company charges $15 per hour for debris removal , plus a one -time fee for the use of the trash dumpster.the total fee for 9 hours of services was$195 . write and solve a linear equation to find the one-time fee for the trash dumpster.

Answer 1

Let h be the numbers of hours, f be the one-time fee and c the cost charged. The equation is

`c=15h+f`

Since you pay $15 per four, plus the fee. We can solve this equation for the fee:

`f=c-15h`

If we plug c=195 and h=9, we have

`f=195-15\cdot 9=195-135=60`