4
QuizMultiple Choice

Modeling with Sequences and Series — Unit test

Question 4 • 2025-2026 FBISD - Precalculus B (CR)

Tyrone opens a savings account by depositing $75 in August. He increases each month’s deposit by $10 compared to the previous month’s deposit. Which of the following shows the amounts in Tyrone’s account from August through December?

Answer
A
$75, $85, $95, $105, $115
B
$75, $160, $255, $360, $475
C
$85, $95, $105, $115
D
$160, $255, $360, $475

Explanation

Tyrone deposits $75 in August, then adds $10 to each new monthly deposit: $85 in September, $95 in October, $105 in November, and $115 in December. The account balance accumulates all deposits: $75, $75 + $85 = $160, then $255, $360, and $475. So the amounts from August through December are $75, $160, $255, $360, and $475, which is choice B.

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