Hello it is my birthday and I need help :D

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

16x^2-16x=5 solve the equation by completing the square

Adan has decided to purchase an $9000 car. he plans on putting 20% down toward the purchase and financing the rest at 7.9% interest rate for 3 years. find his monthly payment a) $225.29 b) $298.81 c) $204.78 d) $236.89