Solve 5(2^x+4)=15 . Round to the nearest thousandth

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

If the discriminant if a quadratic equation is 4 which statement describes the roots?