TVO ILC MCR3U Assessment for Feedback and Grade 9. Use the most appropriate method to find the number of zeros for each function. Explain your though process. a) y=8(x+6)(x9) (1 mark) b) f(x) = 2(x + 4)? (1 mark) c) glx)=6x?>+11x+23 (1 mark) 10. The cost, in thousand of dollars, of making x items, in hundreds, is given by C(x) = 12x 75. The revenue function is given by R(x) = 6x2 + 30. Determine the number of items that should be sold to maximize profit. (3 marks) Copyright 2020 The Ontario Educational Communications Authority. All rights reserved. TVOILC MCR3U Assessment for Feedback and Grade 11. Determine the value(s) of k such that f(x) = x? 2x + k has one zero. (3 marks) THINKING 12. The point (-4, 482) is on the graph of y = 6f[(x 5)] 4. What is the original point on y=f(x). (4 marks) 13. Sketch an example of a relation which satisfies all 3 of the following conditions: (3 marks) e is a function e has domain {x R} e hasrange {y ER|y