SOLUTION: i need help with this question: the question is: .... The cost of renting a DVD at a certain store is described by the function f(x)=4x+3 in which f(x) is the cost and x is the tim

SOLUTION: i need help with this question: the question is: .... The cost of renting a DVD at a certain store is described by the function f(x)=4x+3 in which f(x) is the cost and x is the tim

Algebra.Com

Question 527047: i need help with this question: the question is: .... The cost of renting a DVD at a certain store is described by the function f(x)=4x+3 in which f(x) is the cost and x is the time in days. If Lupe has $12 to spend, what is the maximum number of days that she can rent a single DVD if tax is not considered?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
12=4x+3
12-3=4x
9=4x
x=9/4
x=2 1/4 days
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