Use set builder notation to write the set E={1, 3, 9, 27}

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.

i think that you should ask google for the answer to that problem because if we don't know it google does

overpriced

step-by-step explanation:

answer: this is not a question

step-by-step explanation: this is a answer