Question

Residents of the town of Maple Grove who are connected to the municipal water supply are billed a fixedamount monthly plus a charge for each cubic foot of water used.In other words, the monthly bill is a linearfunction of the water used. A household using 1000 cubic feet was billed $40, while one using 1600 cubic feet wasbilled $55.(a) (2 pts) What is the charge per cubic foot?

Answer 1

Answer:

Household using 1000 cubic feet: charge per cubic foot is $0.04

Household using 1600 cubic feet: charge per cubic foot is $0.034375

Explanation:

Household using 1000 cubic feet

Bill = $40

Volume of water used = 1000ft^3

Charge per cubic foot = $40/1000 = $0.04

Household using 1600 cubic feet

Bill = $55

Volume of water used = 1600ft^3

Charge per cubic foot = $55/1600 = $0.034375