Answer:
Step-by-step explanation:
Next term of the given AP can be obtained by adding common difference (d) in the last term

Part A:
-np - 70 < 40
+70
-np < 110
-n < 110/p
Part B
4w-7k=28
-7k=28-4w
7k=4w-28
k=4/7w-4
This is a volume question. 8x8x8, 512 cubic inches of water.