What summation formula represents the series below?

5+7+9+11

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Which of the following is true for the relation f(x)=2x^2+1

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.