Please Help fast I don’t know

Acollege is planning to construct a rectangular parking lot on land bordered on one side by a highway. the plan is to use 680 feet of fencing to fence off the other three sides. what dimensions should the lot have if the enclosed area is to be a maximum?

After two years, how much has been paid into interest?

Give all possible names for the line shown.calculation tip: lines can be written with either point first.