The function C(x)=5x+900 represents the cost to produce x, number of items. Find the average cost function, c(x), and the number of items that should be produced so that the average cost is less than $20.

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

Of four points are collinear, they are also coplanar

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