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Problem Find the two values of x for which the following function is undefined. [2 marks] x2 - 25 f(x) = 1_ex-4x-21 Enter the two values of x into the answer box below, separated with a comma. Problem #3: Save Your work has been saved!_(Back to Admin Page) Problem : Let f and g be the functions whose graphs are shown below. [4 marks] f (x ) 3 2 2 3 -21 g(x) (a) Find (8 . f) (4) (b) Find (f . 8 ) (1) Problem #4(a): Problem #4(b)