Question: 3. Solve the following word problem using the Quadratic Formula: The equation S = 0. 3214x - 0. 1323x + 13.2 models the fuel efficiency

3. Solve the following word problem using the Quadratic Formula: The equation S = 0. 3214x - 0. 1323x + 13.2 models the fuel efficiency E, of the passenger cars in miles per gallon, x years after 1940. Environmentalists pressured automobile manufacturers for a fuel efficiency of 65 miles per gallon. According to the model, in which year will the fuel efficiency reach 65 miles per gallon? 4. Rationalize the denominator of the following Radical Expression: 315 31/2 + 16

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