Can someone help me please

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319

Someone answer this asap for the first five terms of a sequence are shown. 5, 11, 23, 47, 95, . . which recursive function defines the nth term in the sequence for n > 1? a. f(n) = f(n - 1) + 6 b) f(n) = f(n - 1) + 48 c) f(n) = 3 • f(n - 1) + 1 d) f(n) = 3 • f(n - 1) - 4