R= 13in find the circumference given the radius

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

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.