Find the missing angle, then find y, then find xz

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.

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

The value of cos 30° is the same as which of the following?