Adriveway is shaped like a parallelogram with a base of 28 ft and a height of 17 ft. covering the driveway with crushed stone will cost 2.75 per square root. how much will it cost to cover the driveway with crushed stone?

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

What is the value of x when x + 7 = 21?

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.