16. Suppose f(x) = x2 and g(x) = x + 56. What are the x-intercepts of the graph of y = f (x) - g(x)? a. -8 and -7 b. -8 and 7 C. 7 and 8 d. -7 and 8 17. Suppose f(x) = x2 - 14x + 49 and g(x) = - _ G. At which of these points does the function y = f(x)g(x) have a hole? a. (-7, -7) b. (7, 0) c. (-7, 0) d. (7, 7) 18. Suppose A(x) = 1 2 and g(x) = vx+10 . Which of these expressions is equivalent to f (g(-1))? a. b. WIH c. -3 d. 3 19. If f(x) = log 4x and g(x) = x2 - 2, which of these expressions is equivalent to f(g(4))? a. log 4 + log 14 b. log2 16-2 C . log2 14 d. log 4 x log 14 20. If f(x) = and g(x) = 1 log x 8+ x' what is the domain of y = f (x)g(x)? a. {x ER ( x = -8 and x # 1} C. {x ER | x > 0 and x # 1} b. {x ER | x > 0} d. {x ER | x > 0 and x # 8} Part B- Thinking and Investigation ITI - 24 marks]