Elizabeth had a book delivered to her home. the total cost included the price of the book, 7% sales tax on the price of the book, and a $4.50 shipping charge. elizabeth paid a total of $31.25.

what was the pre-tax price of the book?

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

One integer is 5 more than another. their product is 104. find the integers

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?