What is (1.2 x 10^-2) x (3 x 10^5)

A. 3.6 x 10^-4

B. 3.6 x 10^3

C. 3.6 x 10^4

D. 3.6 x 10^-3

B. 3.6 x 10^3

Step-by-step explanation:

(1.2 x 10^-2) x (3 x 10^5)

When we multiply terms with powers, we multiply the factors out front and add the exponents

a * 10^b * c * 10^d = ac * 10^ (b+d)

(1.2 x 10^-2) x (3 x 10^5) = (1.2 * 3) * 10^ (-2+5)

= 3.6 * 10 ^3