Kyle measured the distance from his house to the library. He discovered that his measurement had a margin of error of 0.05 mile. Which of the following could be the measured distance from his house to the library?

A.
30.32 miles
B.
30.3 miles
C.
30 miles
D.
30.323 miles

The measured distance could be anywhere between 30 miles - 0.05 miles = 29.95 miles and 30 miles + 0.05 miles = 30.05 miles. Therefore, the possible measured distance is option B, 30.3 miles.