Pls Help me, Im so confused, this will decide if i get into my dream school Plsss help me!

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

Astore has apples on sale for three dollars or 2 pounds how many pounds of apples can you buy for nine dollars if an apple is approximately 5 ounces how many apples can you buy for nine dollars

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.