The average daily balance of Jack's new credit card account is $391.29 and the finance charge that Jack can expect on his first credit card statement is closest to $141.
The average daily balance is computed as the mean of the daily balances on a person's credit card account after they are multiplied by the number of days for each daily balance.
Period Days Daily Balance Product/Sum
day 1 to day 9 9 $150.00 $1,350.00 ($150 x 9)
day 10 to day 13 4 $212.48 $849.92 ($212.48 x 4)
day 14 to day 18 5 $243.17 $1,215.85 ($243.17 x 5)
day 19 to day 26 8 $623.42 $4,987.36 ($623.42 x 8)
day 27 to day 30 4 $833.89 $3,335.56 ($833.89 x 4)
Total 30 $11,738.69
Average daily balance = $391.29 ($11,738.69/30)
The finance charge = $140.86 ($391.29 x 1.2% x 30) or ($11,738.69 x 1.2%)
Thus, the average daily balance of Jack's new credit card account is $391.29 with a finance charge of about $141.
Learn more about computing credit card average daily balance here: brainly.com/question/4403314