Find the missing value ( SHOW THE WORK )

If n stands for number sold and c stands for cost per item, in which column would you use the formula: ? a. column d c. column f b. column e d. column g

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

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t