To get to her physics class,Alice walks 0.25 mi to the bus stop.She takes the bus 1.2 mi to the train station.She takes the train 13 mi and walks the remaining 0.17 mi to her class.How far is her commute expressed to the correct number of significant figures?
A)14.6 mi
B)10 mi
C)15 mi
D)14.62 mi
E)14.620 mi

Question

Quizplus · Accepted Answer

The distances given are to two significant figures, so the total distance should also be expressed to two significant figures. Adding the distances: 0.25 mi + 1.2 mi + 13 mi + 0.17 mi = 14.62 mi, which to two significant figures is 15 mi.

To Get to Her Physics Class,Alice Walks 0