Solve by substitution

Y = x + 3

Y=2x + 5

Which equation represents y = - x^2 - 10x - 20 in vertex form?

Which angles are pairs of corresponding angles? Check all that apply.

You can choose from three types of sandwiches for lunch and three types of juice. How many possible lunch combinations of sandwich and juice can you have?

If the volume of a rectangular prism is 315 cubic meters and area of the base is 45 square meters, then what formula could be used to find the height of the prism

In the space at the right, draw a triangle : Use an algebraic expression to label the length of each side. Write an expression for the perimeter of your triangle. Then simplify that expression.

Angelo rode his bike around a bike trail that was 1/4 of a mile long. He rode his bike around the trail 8 times. Angelo says he rode a total of 8/4 miles. Teresa says he is wrong and that he actually rode 2 miles. Who is correct?

If a (x) = 3x + 1 and b (x) = squareroot x-4, what is the domain of (b*a) (x) ?

The formula for the perimeter of a rectangle is P = 2l + 2w, where P is the perimeter, l is the length, and w is the width. Solve for w.

Which type of statement has the form " if A, then B"?

Fine two consecutive even integers such that twice the smaller is 26 more than the larger.