The cables between two telephone poles can be modeled by the equation y=0.0024x^2-0.1x+24 where x and y are measured in feet. To the nearest foot, what is the height of the cable above the ground at its lowest point? (Hint: drawing a diagram might help you get a picture of what they are asking here). Round your answer to the nearest FOOT.

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Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.