Which of the following ordered pairs should be tested to determine which side to shade when graphing the inequality y< 2x+4?

What are the solutions to the equation 4x2+3x=24-x

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

How do you use the elimination method for this question? explain, because i really want to understand!