If Elena sells 15 adult tickets, does she sell at least 100 total tickets?

A80-foot piece of siding is cut into three pieces so that the second piece is four times four times as long as the first piece and the third piece is five times as long as the first piece. if x represents the length of the first piece, find the lengths of all three pieces.

To prove p is equal to q using an indirect proof what would your starting assumption be?

What is the solution set of the quadratic inequality x^2-5< or equal to 0