16. Which of the following diagram represents a relation that is not a function? a. One-to-one b. One-to-many c. Many-to-one d. None of the above 17. The altitude of a plane is a function of the times since take off. What is the dependent variable? a. Time b. Speed c. Altitude d, All of the above 18. To evaluate a function is to the variable in the function with a. omit a value from the function's domain and compute the result. b. simplify c. skip d. substitute 19. Given x=|x2-9| . Find 2. a. -5 b. -4 c. 4 d. 5 20. If hx=3x2+2x-1 , find h-1 a. -5 b. -3 c,O d. 3