if you borrow $3,000 on an 8% discounted loan for 9 months, the amount you actually receive will be $2,820. Given this, what is the effective interest rate on the loan you receive?

126 maybe. sorry

graph #4 (last graph) depict the function   f(x)= -m(x-d)^1/5 i

step-by-step explanation:

we know that

m=slope

but in this function slope is -m that means slope is decreasing and it is decreasing by 1/5 points down the x-axis.

which is shown in graph four

a decreasing slope down x-axis by 1/5 points.

hence 4th graph is the right option for this.