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OpenStudy (anonymous):
Need help with algebra Suppose tuna is on sale for $0.90 a can and you have a coupon for $0.40 off your total purchase. Write a function rule for the cost of N cans of tuna A. C(n)=0.90n-0.40 B. C(n)=0.40n-0.90 C. C(n)=(0.90+n)-0.40 D. C(n)=(0.40+n)-0.90
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