Jeff bought a new jacket that had a regular price of $75.99. his mom gave him a 30% off coupon. what is the price he pays including the discount and 7% tax? the original price of the coat is 120$.

Find the cosine function that is represented in 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?

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?