An arithmetic progression (AP) consisting of 30 terms has a sum of 6000 and the 10th term is 90. Find the first term and the common difference.

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?

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap