Respuesta :

Answer:

10.2

Step-by-step explanation:

F(n) is basically a fancy substitute for y

25= 1.25n + 12.25

subtract 12.25 from both sides

12.75=1.25n

n=10.2

plug back in to double check

1.25(10.2) + 12.25

it equals 25, therefore the answer is

10.2

I think it’s 10.2 I looked it up