In the process of making a financial forecast, Emilio has been looking closely at his variable expenses. Currently, each week he spends an average of $15 on food, $30 on entertainment, and $40 on clothing and other purchases. If Emilio reduced his variable expenses in each of these three categories by $5 a week, how much would he save over the course of one year?

10cm

step-by-step explanation:

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the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).