Abeer is saving money to buy a new cell phone that costs no more than add 90 so far she has saved aed 52 how much more money does a abeer need to save

$38

Abeer's phone costs $90.

Abeer currently has $52.

90-52=38

Abeer needs to save $38 more dollars to buy the phone.

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).