Lilly made 32 of her 40 serve attempts over the net. What percent of her serves made it over the net?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

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.