What is the vertex of the function f(x) = 2x2 + 3x + 27

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Put the equation in slope intercept form by solving for y

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.