18b: Can someone help me out + explain

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

What is the difference between the predicted value and the actual value

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons