The charges for renting a moving van are $50 for the first 20 miles and $8 for each additional mile. Assume that a fraction of a mile is rounded up....

The charges for renting a moving van are $50 for the first 20 miles and $8 for each additional mile. Assume that a fraction of a mile is rounded up. (i) Determine the cost of driving the van 88 miles. (ii) Find a symbolic representation for the function f that computes the cost of driving the van x miles, where 0<x=/<100. Express f as a piecewise-defined function.