Classify the function with its description. f(x) = f(x - 1) * 4, f(0) = 9
a. Arithmetic, Recursive
b. Arithmetic, Explicit
c. Geometric, Recursive
d. Geometric, Explicit

PLEASE HELP ILL GIVE BRAINLIEST AND POINTS

D

Step-by-step explanation:

An explicit formula will create a sequence using n, the number location of each term.

If you can find an explicit formula for a sequence, you will be able to quickly and easily find any term in the sequence simply by replacing n with the number of the term you seek.

it's both, now can you answer my most recent question?

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).