How many gallons of 12 salt solution should a biologist add to 5 gallons of 15% salt solution to get a 14% solution.

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π