What is true of the type of angle in this lesson?

It measures half the sum of the arcs it intercepts.
It measures twice the sum of the arc it intercepts.
It measures half the difference of the arcs it intercepts.
It measures twice the difference of the arcs it intercepts.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.