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Answer:
3
Step-by-step explanation:
First, plot the graph of the function
and the graph of the line
This line intersects the graph of the function f(x) at 4 different points. So, there are 4 different values for b at which
Only 3 of them have positive values.
At these positive values, f(x)=2 (because the graph of the function and the graph of the line y=2 intersect at these points), then for these three b with positive values,