Kenny buys a new drill for $129.90 plus 9.5% sales tax. How much does Kenny pay in total? Round the answer to the nearest cent.

Factor the monomial completely 42a3b3

Which expression is not a polynomial?

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.