The data set represents a bimonthly progression of gasoline prices over the course of several months in an unspecified city. Use a graphing calculator to determine the quadratic regression equation for this data set.
x 0 2 4 6 8
y2.86 2.89 2.93. 3.04. 3.11
a.y = 0.01071 x squared 2 + 0.02214 x + 2.85743
b. y = 0.01071 x squared 2 + 0.02214 x - 2.85743
c.y = 0.00268 x squared 2 - 0.01107 x + 2.85743
d.y = 0.00268 x squared 2 + 0.01107 x + 2.85743