There
to this
equation representing the number of seconds
elapsed between the dolphin exiting and
reentering the water.

There  are two real solutions to this equation, representing the number of seconds elapsed between the dolphin exiting and reentering the water.

Step-by-step explanation:

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.