A bookshelf is 3 1/2 feet long if each book to be placed on the shelf is 2 1/4 inches wide, how many books can fit?

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

When are two distinct non vertical lines parallel

A25- foot ladder leans against a building and reaches a point of 23.5 feet above the ground .find the angle that the ladder makes with the building