The data set represents a progression of hourly temperature measurements. Use a graphing calculator to determine the quadratic regression equation for this data set. x
0
1
2
3
4
5
y
20
16
10
0
-7
-20

a.
y = 0.795 x squared + 3.796 x + 20.180
c.
y = negative 0.875 x squared minus 3.596 x + 20.179
b.
y = negative 0.795 x squared minus 3.760 x + 20.180
d.
y = negative 0.795 x squared minus 3.796 x + 20.180