Afunction follows the rule y = -75 - 5x. when the function's output is 25, the equation is 25 = -75 - 5x. what is the function input when the output is 25? 20 -20 10 -10

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.