a closed cardboard box is a cuboid with a base of 63cm by 25cm. the box is 30 cm heigh, calculate the total surface area of the box​

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?