Which operations is the following set closed under explain your answer \(\left\{2,4,6...\right\}\)

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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.

Bobby bought 1.12 pounds of turkey at a cost of 2.50 per pound. carla bought 1.4 pounds of turkey at a cost of 2.20 per pound. who spent more and by much?