Question

If f(x)=2(3X)+1, what is the value of f(2)?(Substitute and be careful with order of operations) Your answer: A 19, B 13,C 20

Answer 1

We are given the following function

`f(x)=2(3^x)+1`

We are asked to find the value of f(2)

f(2) means to substitute x = 2 into the function

`f(2)=2(3^2)+1`

Recall the order of operations, first solve the exponent, then multiplication, and finally addition

`\begin{gathered} f(2)=2(3^2)+1 \\ f(2)=2(9^{})+1 \\ f\mleft(2\mright)=18+1 \\ f\mleft(2\mright)=19 \end{gathered}`

Therefore, the value of f(2) is 19