Need help on number 1 (b)

Find the vertex of the function given below y=x^2-6x+1

Select the correct statement about the function represented by the table

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