(2.4x10^2) + (1.5x10^2) a. 3.9x10^2 b. 3.9x10^4

the answer is 390

I would go with A. It is closer to the answer of the equation.

(2.4x10^2) + (1.5x10^2) = 24150

3.9x10^2 = 390

3.9x10^4 = 390000

if you explain the the question more correctly i might be able to answer this better

step-by-step explanation:

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction