How do i solve that by using quadratic formula?

Which graph shows a function with a range of all real numbers greater than or equal to -1

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

Tessa bought stock in a restaurant for $253.00. her stock is now worth $333.96. what is the percentage increase of the value of tessa's stock? a.) 81% b.) 32% c.) 24% d.) 76%