Respuesta :
5 hours
5x+70=320
minus 70 both sides
5x=250
divide by 5 both sides
x=50
charged $50 per hour
5x+70=320
minus 70 both sides
5x=250
divide by 5 both sides
x=50
charged $50 per hour
hi so u would divide 320 by 5 and it would make 64 hope this help with first part