The Aztec Empire Increased its power by: A. forming an alliance with the Olmec civilization
B. refusing to trade with other civilizations.
C. working closely with European explorers/
D. sending its military to conquer neighboring cities.
(due today)

With alll of except for the 2 that i did already

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

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2