The compound interest on $4,000 saved for 3 years at an interest rate of 15%.

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?