What is the solution to this system of equations?
5x + 2y = 29
x + 4y = 13

What is the total surface area of this square pyramid?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

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.