Answer:
B. [tex] 4 \times 10^{12} [/tex]
Step-by-step explanation:
[tex] (6 \times 10^{8}) \div (1.5 \times 10^{-4}) = [/tex]
[tex] = \dfrac{6 \times 10^{8}}{1.5 \times 10^{-4}} [/tex]
[tex] = \dfrac{6}{1.5} \times \dfrac{10^{8}}{10^{-4}} [/tex]
[tex] = 4 \times 10^{8 - (-4)} [/tex]
[tex] = 4 \times 10^{12} [/tex]
