A fancy watch was marked up 45% from an original cost of $221.92. Last Friday, Mason bought the watch and paid an additional 9% in sales tax. What was his total cost?

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?