I am seeking help for five straight forward problems that are attached in one document. These are Business calculus problems and I have been

I am seeking help for five straight forward problems that are attached in one document. These are Business calculus problems and I have been struggling on them for hours and these are just the last five of the fifty I did. Any help is greatly appreciated. Thank you. 

What is in it: integrals and Fundamental Theorem of Calculus problems.