Find the area of a circle with a diameter of 15 feet

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.

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n