If a and ß are the roots of equation ax^2 + bx + c = 0 and if a:ß = m : n, prove that
(m/n)^1/2+(n/m)^1/2+c/a=0

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.