The data set represents a month-to-month 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.

A.) -0.015x² + 0.365x + 1.116

Step-by-step explanation:

Using a graphing calculator, the quadratic regression equation obtained for the data in the table is :

General form of a quadratic regression equation :

A + Bx + Cx²

A = 1.115714

Bx = 0.3647x

Cx² = - 0.015x²

Hence, rounding to the appropriate number of decimal places, the quadratic regression equation becomes ;

-0.015x² + 0.365x + 1.116

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step-by-step explanation: