20
QuizMultiple Choice

Cumulative Exam — Cumulative exam

Question 20 • 25-26 CRX Math Models with Applications 7052A

Dominic is looking over his spending pattern for the past week to try to determine how much money he had on Sunday. This is Dominic’s spending pattern:DayDebit ($)Credit ($)Monday158---Tuesday6944Wednesday175---Thursday13138Friday---53Saturday2214If the bank charges Dominic an overdraft fee of $25 every time he overdraws his account, and Dominic overdrew his account on Thursday but not on Saturday, which of the following is a possible amount of money that Dominic could have had in his account last Sunday? Assume that the only debits and credits not listed are overdraft fees.

Answer
A
$500
B
$480
C
$435
D
$400

Explanation

The listed transactions change Dominic’s balance by a total of $431 from Sunday through Saturday: debits total $655 and credits total $149, plus the $25 Thursday overdraft fee. If he started with $435, his balance after Wednesday would be $77; Thursday’s net spending of $93 would put him at −$16, so the overdraft fee applies. Friday and Saturday together add $45, leaving $4 after Saturday, so he does not overdraw that day. Thus, $435 is possible.

AI-written and checked against the verified answer.

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