For the exponential function $f$, the value of $f(1)$ is $k$, where $…

Question

Prompt

For the exponential function

f

, the value of

f (1)

k

, where

k

is a constant. Which of the following equivalent forms of the function

f

shows the value of

k

as the coefficient or base?

f (x) = 50 (1.4)^{x - 1}

f (x) = 70 (1.4)^{x}

f (x) = 98 (1.4)^{x + 1}

f (x) = 137.2 (1.4)^{x - 2}