Question

Given the function f(x)3^x- 2, which of thefollowing is equivalent to f(3)?

Answer 1

Given,

The function is,

`f(x)=3^x-2_{}`

Taking, x = 3 then,

Substituting the value of x in the above expression then,

`\begin{gathered} f(x)=3^x-2_{} \\ f(3)=3^3-2 \\ f(3)=9^{}-2 \\ f(3)=7 \end{gathered}`

Hence, 7 is the equivalent value of f(3) for the given function.

Therefore, option 1 is correct.