Kelly buys shoes with all the of her money. she only has $150. one pair of shoes is for her and they cost $40. the other 2 pairs of shoes are for her sisters. each of the pairs of shoes cost the same price. determine the price of one pair of shoes.

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.