Charlie is evaluating the product of 0.09 and 0.05. He multiplies, and before placing the decimal, arrives at an answer of 45. After considering the decimal placement, what is Charlieâ€™s final answer?

0.0045

0.045

0.45

0.4545

Charlie is evaluating the product of 0.09 and 0.05. He multiplies, and before placing the decimal, arrives at an answer of 45. After considering the decimal placement, what is Charlieâ€™s final answer?

0.0045

0.045

0.45

0.4545