Write two expressions for the perimeter of the figure

Steve is scuba diving near his home in maui. at one point he is 100 feet below the surface. represent this number with a negative number. if he descends another 5 feet, what negative number will represents his.

Anyone know? will mark brainliest if you're correct!

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid