Question

Solve the following and express the answer in scientific notation: (5.3 x 10^4) + (2.2 x 10^3)

A. 5.5 x 10^4
B. 7.5 x 10^3
C. 7.5 x 10^7
D. 11.7 x 10^7

I say A

Answer 1

correct.