If (8, −9) and (6, −3) are the endpoints of the diameter of a circle, what is the equation of the circle? A) (x − 7)2 + (y + 6)2 = 10 B) (x − 7)2 + (y − 6)2 = 10 C) (x + 7)2 + (y + 6)2 = 14 D) (x + 7)2 + (y − 6)2 = 14

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Use sigma notation to represent the following series for 9 terms.