-5+9j=67
Please help me with math!

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

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

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b