Question

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!

A cleaning company charges x dollars per hour to clean floors and y dollars per hour to clean the rest of a house.

• When the company spends 2 hours to clean floors and 3 hours to clean the rest of a house, the total charge is $80.
• When the company spends 1 hour to clean floors and 4 hours to clean the rest of a house, the total charge is $100.

Which ordered pair represents the hourly charges to clean floors and to clean the rest of the house?

A) (2, 12)

B) (4, 24)

C) (12, 2)

D) (24, 4)

Answer 1

B) (4,24)

This is because you turn one of the equations you make, let's use x+4y=100, and turn it into y=mx+b form. This turns into y=(-x/4) +25 and if you plug in the number 4 as your x you get 24.