You score an 86 on the first of two exams. Write and solve an equation to find the score(x) that you need on the second exam to have a mean score of 90.

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

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?

For what value of (y) is 3^3/3^y =1/9