Question

Jamie's electricity bill costs $10.20 per month plus $3.88 per kilowatt hour. How many kilowatt hours can she use and keep her bill to no more than $144? Round your answer to a whole number.​

Answer 1

Explanation:

144 = 10.2 + 3.88x

with x being the number of kWh.

133.8 = 3.88x

x = 133.8 / 3.88 = 34.48453608... kWh ≈ 34 kWh

Answer 2

34

Explanation:

10.20+3.88x34=142.12

10.20+3.88x35=146

so 34 kilowatt hours is the answer