If dan has 4 apples and gives jack 3 how many does he have left?

Issof claims that the scale factor is 1/2. which statement about his claim is correct

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤