"if 20 percent of 40 percent of a number is 10 greater than half the number, what is the number? a. -500/21b. -500/3c. 200d. 200/21e. 210"

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.

How do i put 3(x+7) in distributive property

Find two numbers if their sum is 91 and the ratio is 6: 7?