Graph f(x) = x^3 - 3x^2 - 9x + 4. Locate and label with ordered pairs, critical points and inflection point

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.