Question

average cost of electricity
assume the average annual electricity consumption for a u.s. residential customer is 11496 and that $0.12 was the average cost per
which equation(s) would produce the average monthly electric bill? (check all correct equations)
(11496/12) * 0.12
12 * 0.12/11496
11496/(12 * 0.12)
(11496 * 0.12)/12

Explanation:

Step1: Calculate annual cost

Annual cost = annual consumption × cost per unit. So annual cost is \(11496\times0.12\).

Step2: Calculate monthly cost

Monthly cost = annual cost ÷ 12. So monthly cost is \((11496\times0.12)\div12\). Also, using the commutative property of multiplication and division \((11496\div12)\times0.12\) is equivalent.

Answer:

\((11496/12)0.12\) and \((11496 0.12)/12\)