Priti invest £6500 in a saving account for 5 years the account pays simple interest of 2.2% per year work out how much interest he gets after 5 years

In a quadratic function of the form ax^2+bx+c, which of the following is not true? a. the y-intercept is c. b. if a is positive, the parabola opens up. c. the vertex has an x-coordinate of -b/2a. d. the axis of symmetry is the line y=-b/2a.