I'm assuming you're referring to problem 6. You are asked to find the number of x intercepts or roots, which is another term for "zero". I prefer the term root or x intercept as "zero" seems misleading. Anyways, all we do is count the number of times the graph crosses the x axis. This happens 4 times as shown in the attached image below. I have marked these points in red. The graph can directly cross over the x axis, or it can touch the x axis and then bounce back. Either way, it is considered an x intercept.

<h3>Answer: there are 4 x intercepts (or 4 roots)</h3>

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3 years ago

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The probability of Roger winning the tournament, given that Stephan wins, is 0. The probability of Stephan winning the tournamen

Fofino [41]

They're both true. Both statements, together, make one
single fancy way of saying "Only one man can win.".

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2 years ago