Jana mixes 2 cups of black paint and 3 cups of white paint to make a shade of gray paint. How many gallons of black paint will she use to make 4 gallons of the same gray paint?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

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?

An arithmetic series a consists of consecutive integers that are multiples of 4 what is the sum of the first 9 terms of this sequence if the first term is 0