Wyatt hiked for 4.7 hours at a rate of 2.9 miles per hour. He determined that he hiked 13.63 miles. Which best explains the reasonableness of Wyatt’s answer?
Answer
A
There are two digits to the left of the decimal in the factors and two digits to the left of the decimal in the product, so Wyatt’s answer is reasonable.
B
There are two digits to the right of the decimal in the factors and two digits to the right of the decimal in the product, so Wyatt’s answer is reasonable.
C
Wyatt’s answer is reasonable because is 8, and 8 is close to 13.63.
D
Wyatt’s answer is reasonable because is 15, and 15 is close to 13.63.