Africa's highest elevation is 5895 meters. it's lowest elevation is −156 meters. how many meters is the difference between africa's highest and lowest elevations?

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

Atown has a population of 17000 and grows at 2.5% every year. to the nearest year, how long will it be until the population will reach 19600?