Question

For the exponential function f(x) = 8(9)^x-1, find f(4).

Answer 1

f(x)= 8 (9)^ x -1

Replace x= 4

f(4)= 8 (9)^ 4-1

f(4)= 8 (9)^3

f(4)= 8 (729)

f(4)= 5,832