Answer
2.88 $\times$ $10^{7}$
Work Step by Step
You have (6 $\times$ $10^{4}$)(4.8 $\times$ $10^{2}$).You have to simplify it:
6 $\times$ 4.8 $\times$ $10^{4}$ $\times$ $10^{2}$ -put like terms together and add the exponents since you are multiplying-
28.8 $\times$ $10^{6}$ -move the decimal one place to the left and add 1 to the exponent-
=2.88 $\times$ $10^{7}$
