The sales tax for an item was $9.40 and it cost $470 before tax. find the sales tax rate. write your answer as a percentage.

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'