Note: that 82≡4 (mod13) and 59≡7 (mod13). Evaluate the following expressions using modular arithmetic (your final answer should be a number between 0 and 12,i. e. an element of [13]) a. 59-82 (mod13)

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).

$450 i think. hope this ☺