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QuizMultiple Choice

Summation Notation — Quiz

Question 2 • Precalculus

Food costs are expected to rise 6 percent each month for the next year. Which series correctly depicts the cost (to the nearest cent) for the next three months if the current cost is 150 dollars per month?

Answer
A
159 point 0 0 dollars plus 168 point 0 0 dollars plus 177 point 0 0 dollars
B
150 point 0 0 dollars plus 159 point 0 0 dollars plus 168 point 5 4 dollars
C
159 point 0 0 dollars plus 168 point 5 4 dollars plus 178 point 6 5 dollars
D
150 point 0 0 dollars plus 159 point 0 0 dollars plus 168 point 0 0 dollars

Explanation

Increase the cost by multiplying by 1.06 each month. The first month is $150.00 × 1.06 = $159.00, the second is $159.00 × 1.06 = $168.54, and the third is $168.54 × 1.06 = $178.65 to the nearest cent. This matches choice C.

AI-written and checked against the verified answer.

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