A bookstore has marked down the price for all the books in a certain series by 15%. How much is the discount on a book that normally costs $18.00? After the discount, how much would the book cost?

Brady has a 20 year fixed rate mortgage for $215,500 with monthly payments of 1,305.89.the annual interest rate is 4%. what is the total cost of the principal and interest for this loan rounded to the nearest dollar

Ineed me i stuck and i don’t want to get it wrong

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex