For a long-distance phone call, a hotel charges $0.55 for the first minute and $0.17 for each additional minute or fraction thereof. A formula for the cost is given below, where t is the time in minutes. (Note: [x] greatest integer n such that n s x. For example [3.2] = 3 and [[-1.6]]=-2.) = = c(t) 0.55 0.17 [-(t - 1) ]] (a) Use a graphing utility to graph the cost function for 0