Please help me answer these pre-calculus, Piecewise Functions questions and explain the steps so I can understand.

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For the function defined here, find f(0), f(2), and f(4) by using the graph below. x24 if 9:32 x+1 if a:>2 M) ={ 7 \fGraph the following piecewise-defined function. Indicate whether the endpoints of each piece (with a closed or open dot) are included on the graph. f(z ) x+ 2 if x 1 (Hint: Graph each pieces as a line ray starting from the edge of its domain, and then plot an open or closed dot at the starting point of each ray.) 6 5 4 7 -6 -5 -4 -3 -2 - 1 2 4 5 6 Clear All Draw: 1 . O\fFor the given piecewise-dened function, answer the following questions. 3132, ifsch :c+1,ifa:>0 a. Evaluate the function at the given values of the independent variable. f( 3) = f(0) = M) b. Graph the function. Hint: Draw each piece as a ray with the starting point at the edge of the domain. Then draw an open or solid dot at the starting point of each ray. If two rays have the same starting point, only draw one dot. Clear Alll Draw: Vil Graph the following piecewise-defined function. Indicate whether the endpoints of each piece (with a closed or open dot) are included on the graph. 2x - 4 if x 2 5 4 5 -4 -3 -2 -1 1 2 5 -2 -3 -4 -5 Clear All Draw: O Note: Be sure to include closed or open dots, but only at breaks in the graph.For n copies of a book, a print-on-demand company charges C(n) dollars, where C(n) is determined by the function: 15.47n, if1 121 a. How much does it cost to ship 121 copies? EA b. How much does it cost to ship 122 copies? c. How many copies could you buy for the same price as you would for 121 copies, if you ordered more than 121 copies? (Round down to the nearest copy.) copies