#### Answer

$3^{7}$

#### Work Step by Step

You have to simplify $3^{4}$ $\times$ $3^{3}$:
$3^{4}$ $\times$ $3^{3}$ -since you are multiplying, add the exponents with the same base-
$3^{4+3}$=$3^{7}$
=$3^{7}$
The person solving the problem incorrectly multiplied the two numbers. They should have only added the exponents.