Pls help omg What polynomial remains after the greatest common factor of 4m2n2 is factored out of

16m4n3 - 12m3n4 + 20m2n2 ?

a
4m^2n - 3mn^2 + 5
b
16m^2n - 12mn^2 + 20
c
4m^3n^2 - 3m^2n^3 + 5mn
d
16m^3n2 - 12m^2n^3 + 20mn

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).