Question

Multiply (5 × 104)(7 × 103), express in scientific notation.

A) 3.5 x 107
B) 3.5 x 108
C) 35 x 107
D) 35 x 108

Answer 1

C) 35*107

7*5=35

103+4=107

Answer 2

the answer would be 3.5*10^8 i took the test your answer is b