On monday paula has $20 is her bank account. she spends $25 and then spends another $10. how much money does she need to add into her account (deposit) to return to the original amount she started with on monday?

15

Step-by-step explanation:

10 + 25= 35 and 35-20 = 15

please give branlest

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).