Isabel walks 0.83 miles to and from the library 3 days a week. about how many miles does she walk in 4 weeks? answers are: a. about 3 miles b. about 4 miles c. about 12 miles d. about 18 miles

Distance covered in 1 week which involves 3 days of walking to the library = 0.83 miles

In 4 weeks,

Total distance walked = 4*Distance covered in 1 week = 4*0.83 = 3.32 miles.

The correct answer is B. since the distance walked ≥ 3.32 miles and not too large than 3.32 miles.