Answer:
Your answer is D my man
Explanation:
First I multiplied 7.50 to 315 and I got $2362.5
then I multiplied the 7.75 to 315 and got $2441.25
finally I subtracted 2362.5 from 2441.25 and my answer was $78.75
Answer:78.75
.25*315+78.75
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