Respuesta :
You have to take the amount of money payed, which in this case is 45.50, and divide it with 7.
Well from the equation $45.50 represents y (in this case) and now you're finding x.
y = 7x
45.50 = 7x Divide both sides of the equation by 7 to find x.
45.50/7 = 7x/7
6.50 = x
Hence she worked 6.5 hours (or 6 hours 30 minutes.)
HELPFUL?