Question 15 • Precalculus
Each year’s salary is 4% higher than the previous year, so the seven salaries form a geometric sequence starting at $78,000 with ratio 1.04. Their total is $78,000 × (1.04⁷ − 1) ÷ (1.04 − 1) = $616,066.97, which rounds to $616,067. The correct choice is $616,067.
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