Solve each problem and write your answers in scientific notation.
(6.0 x 105) x (3.0 x 104) =
A. 18 x 1020
B. 18 x 109
C. 1.8 x 1020
D. 1.8 x 1010
All scientific notation has a single digit followed by a decimal, so
automatically A and B are out
btw, the powers of 10 are written such as 10^4 for "ten to the fourth"
(6.0 x 105) x (3.0 x 104)
= 18 x 10^9
= 1.8 x 10^10