Consider the graph of the function below and use it to answer questions 19, 20, and 21. 19. At what value of 33 is there an innite discontinuity? A) -1 13) *0 e) 1 20. At what value of 33 is there a jump discontinuity? A) *-1 13) 0 C) 1 21. At what value of 33 is there a removable discontinuity? A) -1 13) 0 C) *1 22. Find the limit of l' 73:2 1' $5130 3: 7 A) 00 B) *00 C) 1 E) None of the above. E) None of the above. E) None of the above. E) Does not- exist . 23. Find the limit of 5x2 - 7x lim 14-00 9.12 + 8 -00 B) DO () *5 D) - E) 0 24. Find the limit of 12 - 12x10 lim 1+0 2 - 7x14 A) *0 B) 12 C) 7 D) Do E) -Do Use the following information to answer questions 25 and 26. As a fungus grows, its rate of growth changes. Young fungi grow exponentially, while in larger fungi growth slows, and the total dimensions of the fungus increase as a linear function of time. If R(t) is the rate of growth of the fungus given as a function of time, t, then R (t ) = 2et if 0 S t S to if t > to where is the time at which the fungus switches from exponential to linear growth and a is a constant. 25. For what value of a is the function R(t) continuous at t = t? A) *2etc B) In(2tc) C) to D) +2 E) None of the above.26. Assume that to = 2. Which graph represents R(t)? AR AR 20 20 2 A) C) AR 20- AR 20- 2 D) B E) None of the above