Question

The Hydro water department has a monthly service charge of $12.80 and a volume charge of $1.55 for every 100 cubic feet of water.

The total monthly cost is equal to the service charge plus the charge for the volume used during the month. If we let x represent the number of cubic feet of water (in hundreds) and y represent the total monthly cost, then we have:
total monthly cost = volume charge + service charge
y = 1.55x + 12.80

If the Johnson family used 200 ft3 more water

Answer 1

If the Johnson family used 200 ft3 more water this month than last month, then they can expect

A. an increase in their water bill of $3.10.
B. an increase in their water bill of $25.60.
C. a decrease in their water bill of $3.10.
D. a decrease in their water bill of $25.60.

Answer 2

your answer is B

Answer 3

can i have a medal?