Question

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Answer 1

29) Answer C

When f(x) = 0, it cuts the axis, the graph has 4 solutions. 

30) Answer B

When f(x) = x. it is a line that cuts through at (1,1), (2,2) ...  it will cut the graph at 2 points. 

Answer 2

Question 29 is A 2 and 30 is C 3