HELP A S A P 20 POINTS Select all the expressions that correctly calculate the perimeter of the shape.
40 + 20pi
80 + 20pi
120 + 20pi
300 + 100pi
10 + 10 + 10pi + 10+ 10 + 10pi

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

The graph of a curve that passes the vertical line test is a: