Ineep ! which angle pairs in the diagram are supplementary angles? check all that apply. ∠3 and ∠6 ∠1 and ∠4 ∠5 and ∠6 ∠4 and ∠5 ∠6 and ∠7

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.