Help me please! This is IXL :((

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

Is the point (0, 8) on the x-axis or y-axis? how do you know?

Worth 15 points handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony? a= p = 1/4 b= p+0.25p c=(p + 1/4)p d=5/4p 0.25p choose 2 answers