Melanie charges $4.50 per hour when she washes cars. Plus $5.00 for supplies. Which function rule represents the amount, Y, Melanie charges to wash cars for x hours

Question

A: y= 0.50x
B: y= 4.50x+5.00
C: y=5.00x+4.50
D: y=9.50x

Answer 1

The function rule that represents the amount, Y, Melanie charges to wash cars for x hours is:

B: y= 4.50x+5.00

This is because Melanie charges $4.50 per hour (which means the rate is 4.5x) and adds $5.00 for supplies (which is a fixed fee).