Solve x2 + 6x = 7 by completing the square. Which is the solution set of the equation?

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?