exam Maths Puzzle Numerical Ability

how do you grade(x-4)^2+y^2+9?

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exam Other Question

From a square piece of cardboard with width x inches, a square of x - 3 inches is removed from the center. Write the area of the remaining piece as a function of x. Driving down a mountain,Tom finds that he has descended 1800 ft in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth.