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A moving company charges $840 plus $17 per hour. Another moving company charges $760 plus $22 per hour.how long is job that costs the same no matter wich company is used

Respuesta :

1. Make an equation.
Moving company #1: y = 17x + 840
Moving company #2: y = 22x + 760

2. Put the equations together and solve
17x + 840 = 22x + 760
-17x            -17x
840 = 5x + 760
-760        -760
80 = 5x 
5       5
16 = x

When a job is 16 hours they both charge the same thing.