An office equipment rental and leasing company rents copiers for $10 per day (and any fraction thereof) or for $50 per 7-day week. Let C(x) be the cost of renting a copier for x days.
(A) Graph C(x) for 0 ≤ x ≤ 10.
(B) Find limx→ 4.5 C(x) and C(4.5).
(C) Find limx→ 8C(x) and C(8).
(D) Is C continuous at x = 4.5? At x = 8?