If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram

In the 30-60-90 triangle below side s has a length of and side r has a length

Match each function with its rate of growth or decay

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10