What is {3×[15+2×(5+5)]}-25=

Calculate within parentheses [15 + 2 x (5 + 5)] : 35

= 3 x 35 - 25

Multiply and divide (left to right) 3 x 35 : 105

= 105 - 25

Add and subtract (left to right) 105 - 25 : 80

= 80

The answer is 80

m=-16

step-by-step explanation:

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).