In a wildlife study, 50 penguins are captured, tagged, and then returned. A few weeks later in the same area, 300 penguins are examined. Of those 300, four penguins have tags. Estimate the number
of penguins in the area.

Answer is in the photo. I can only upload it to a file hosting service. link below!

tinyurl.com/wpazsebu

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.