Assuming annual compounding, then: FV=15000*(1+.035)^15 FV=15000*1.6753488307521611831782355996538 FV=$25130.23 At the end of 15 years, Tom should have $25130.23 in his account.
Ok I think it means that the length of the rectangle is 2 m more than is width ... The area is A= so: Solving this equation (using the quadratic formula) you get 2 solutons. The only acceptable is the positive one, i.e. , the length will then be .