Chapter 7.7, Problem 4STP

For Exercises $1-5,$ choose the correct letter.

What is $3\cdot 2^x$ if $x=3?$

F. 18

G. 24

H. 125

I. 216

To determine

To find the value of given equation at the given value.

Answer to Problem 4STP

24 & option G is correct.

Explanation of Solution

Given:

  $3\cdot 2^x,x=3$

Calculation:

Put $x=3$ in $3\cdot 2^x$ ,

  $\begin{array}{l}3\cdot 2^x=3\cdot 2^3\\ =3\cdot 8\\ =24\end{array}$

Hence option G is correct.