SAT Math Multiple Choice Question 696: Answer and Explanation

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Question: 696

6. The Municipal Electric Company charges each household $0.15 per kilowatt-hour of electricity plus a flat monthly service fee of $16. If a household uses 30 kilowatt-hours of electricity and is charged $P in a given month, which of the following equations is true?

  • A. 0.15(30) + 16 = P
  • B. 0.15P + 16 = 30
  • C. Images
  • D. Images

Correct Answer: A

Explanation:

A

Algebra (representing quantities) EASY

The cost for a month's worth of energy is the cost per kilowatt-hour times the total number of kilowatt-hours used: ($0.15/kWh)(30 kWh). The total monthly charge, P, must also include the service fee: P = 0.15(30) + 16.

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