Solid fats and sweets are known as empty calories because they are generally ? A. High in calories and high in nutrients.
B. High in calories and low in nutrients.
C. Low in calories and high in nutrients.
D. Low in calories and low in nutrients.

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.