If the sum of twice a number and four is eighteen, what is that number?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

The bottom of a slide at the playground is 6 feet from the base of the play set. the length of the slide is 10 feet. how tall is the slide. 11.66 feet 10 feet 6 feet 8 feet