7. The ski club has 47 members. There are 25 more downhill skiers than there are cross-country skiers. How many downhill skiers are there? How many cross-country skiers? and how do you set this up ?

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32