Someone pls help i dont know how to work this problem. To be more specific i dont know the answer to (e)

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

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