Fuel efficiency for a certain vehicle is given by F(v) = -0.018v2 + 1.48v + 1.8 where F(v) is the
fuel efficiency in miles per gallon (mpg) for a vehicle traveling v miles per hour (mph).
a. What speed (v) will yield the maximum fuel efficiency? (Round to the nearest mile per hour)

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.

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