The diagonal of a square has length 14 find the length of a side

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

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

What is the circumference of the pie