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D. $29152.20

Add 56.58+77.71=134.29. Multiply that by 12 and you get 1611.48. Then multiply by 15 years and you get 24172.20.

Next, do 2490×2= 4980, then add that to 24172.20 and you get $29152.20.

C. $11824.40

First do 132×15 credits to get 1980, then multiply that by 2 semesters, then multiply that by 2 years to get $7920. Then do 755×2 and add it to the 7920 and you get 9430.

Multiply that by 1.08 since it increases 8% and you get $10184.40.

Do 820×2, then add that to 10184.40 and you get $11824.40.