Forth time I had to ask this!! Answer ASAP

Mr. Gee's class orders paperback books from a book club. The books cost $2.95 each. Shipping charges are set at $4.00, regardless of the number of books purchased.

A.) If you know how many books Mr. Gee's class orders, can you determine how much money they spend? Write the corresponding expression

B.) Use your expression to determine how much Mr. Gee's class spent buying 24 books.

C.) The class has a budget of $175 to spend on books, how many books can the class order with the $175 budget.