Mrs. Campbell wrote five equations on the board. Which of the equations did she write correctly? Choose all that apply. 40 x 0 = 0
40 x 0 = 0

25 x 1 = 25
25 x 1 = 25

34 x 1 = 1 x 34
34 x 1 = 1 x 34

28 x 0 = 28
28 x 0 = 28

77 + 1 = 77

sis id but thanks for the points

Step-by-step explanation:

5050 i think

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).