A Let $x$ denote the amount of time a book on the two$-$hour reserve is checked out, and

suppoee the colf is

$F(x)=\{\begin{array}{cc}0,& x<mn\; id="EditorElement\_1440322">0</mn>\\ \frac{x^2}{4},& 0x<mn\; id="EditorElement\_1440360">2</mn>\\ 1,& x2\end{array}$

Use the cdf to obtain the following:

a$)P(x1).$

b$)P(0\mathrm{.}5x1)$

c$)P(x>1\mathrm{.}5).$