What’s the average of 3, 6, 9, 12, and 15

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

Ineed with number 6 , explain how to get 1978

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.