Help me with this please.

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?

Chelsea is graphing the function f(x) = 20()x. she begins by plotting the initial value. which graph represents her first step?