A school's purchases calculators from a store for $6 each create an equation that represents the total cost, d,dollars, for the number of calculators purchased, c. use both variables in your equation

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.

Find the nonpermissible replacement for binthis expression.b2/5b +5

50 points~ ! i have to turn this in tomarrow