How to solve 2x+4y=7 and -2x+3y=14 using any elimination method and please show work

The height of a triangle is 4 in. greater than twice its base. the area of the triangle is no more than 168 in.^2. which inequalitycan be used to find the possible lengths, x, of the base of the triangle?

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Suppose 38 lbs of coffee beans are required to produce 2 lbs of farmer's coffee. how many lbs of coffee beans are required to produce 309 lbs of farmer's coffee?