Ineed asap, will give brainliest and 50

Hello i need some with trigonometric substitutions. [tex]\int\limits^a_b {x} \, dx[/tex]

There are 4 cups in a quart and 4 quarts in a ganon.jug of water? . how many cups are in a 5-gallon jug of water?

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?