Trussville Utilities uses the rates shown in the table below to compute the monthly cost C(x) of natural gas for residential customers. Usage x is measured in hundred cubic feet (also called centum cubic feet, CCF) of natural gas. a. Find the charge for using 200CCF. b. Find an expression for the cost function C(x) for usage within the first 800CCF. C(x)=,0x800 c. Find the charge for using 800CCF. d. Find an expression for the cost function C(x) for usage over 800CCF. C(x)=,x>800 e. Write the symbolic form for the statement, "The cost for using 1000CCF is $76.00." C()=