Rebekah has `x` twenty-dollar bills and 3 ten-dollar bills. How much money does Rebekah have?

Write your answer as an expression.

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

The diagram represents the polynomial 4x2 + 23x – 72. what is the factored form of 4x2 + 23x – 72? (4x + 8)(x – 9) (4x – 8)(x + 9) (4x + 9)(x – 8) (4x – 9)(x + 8)

What is perpendicular to y=-1/2x+11