Tiffany's quiz grades on the first four quizzes are 72. 87.83 and 91. in terms of an inequality, what scores on the last quiz will allow her to get an average of at least 85? x 90 x 91 x92 x 390 x 591 x592 click save and subint to save and submit click save al e rt to an alla

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.