Decide whether the table represents a linear or exponential function circle with a linear exponential then write the function formula.

This function starts at , so we have .

Then, every time increments by 1, doubles. This is typical of exponential functions. In linear functions, every time increments by 1, increments by a fixed amount (the slope of the function).

So, this is an exponential function, and the equation is

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.