12
QuizMultiple Choice

Cumulative Exam — Cumulative exam

Question 12 • 25-26 CRX Math Models with Applications 7052A

In 1985, there were 285 cell phone subscribers in the small town of Glenwood. The number of subscribers increased by 75% per year after 1985. How many cell phone subscribers were in Glenwood in 1990?Years1986 (x = 1)1987 (x = 2)1988 (x = 3)Number of cell phone users4988721527

Answer
A
1800
B
4677
C
2672
D
8186

Explanation

From 1985 to 1990, the number increases for 5 years. A 75% yearly increase means multiplying by 1.75 each year, so calculate 285 × 1.75⁵ ≈ 4,677.73. This is about 4,677 subscribers, matching choice B, 4,677.

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