Someone help me please​

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

Which expression and diagram represent “renee biked four times as far this month as last month”?

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?