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