what is the solution of the system of equations? {13x−6y=23x−4y=−10 enter your answer in the boxes..

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.