The graph below shows a company's profit f(x), in dollars, depending on the price of erasers x, in dollars, being sold by the company:
GRAPH IS DOWN BELOW VVVV
Part A: What do the x-intercepts and maximum value of the graph represent? What are the intervals where the function is increasing and decreasing, and what do they represent about the sale and profit? (5 points)
Part B: If at one time the profit of the company was at least $120 what domain could possibly produce this profit? (2 points)
Part C: What

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I already have answer "A" I need help with B & C.

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