Problem
Evaluate: \[ \left(2.4 \times 10^{4}\right)\left(4.5 \times 10^{3}\right) \] A \( 1.08 \times 10^{7} \) B \( 1.08 \times 10^{8} \) C \( 1.08 \times 10^{12} \) D \( 1.08 \times 10^{13} \)
Solution
Step 1 ：\( (2.4 \times 10^{4})(4.5 \times 10^{3}) = (2.4 \times 4.5) imes (10^{4} \times 10^{3}) \)
Step 2 ：\( = 10.8 \times 10^{7} \)
Step 3 ：\( = 1.08 \times 10^{8} \)
