Y is proportional to x2.
When x = 5, y = 100
Work out the value of y when x = 3

21

step-by-step explanation:

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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.

answer: its the third option.

step-by-step explanation:

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