# chemistry

posted by
**drew** on
.

solve the following and express your answer in scientific notation: (5.3 x 10^4) + (1.3 x 10^3)

A. 5.4 X 10^4

B. 5.4 X 10^8

C. 6.6 X 10^7

D. 6.9 X 10^7

I say c

posted by
**drew** on
.

solve the following and express your answer in scientific notation: (5.3 x 10^4) + (1.3 x 10^3)

A. 5.4 X 10^4

B. 5.4 X 10^8

C. 6.6 X 10^7

D. 6.9 X 10^7

I say c