Find the percent of the number, 20% of 60 is?

How do you find the area of a triangle

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.

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.