Business Let f be a function that gives the cost to rent a power washer for x hours. The cost is a flat $45 for renting the washer, plus $20 per day or fraction of a day for using the washer.
(a) Graph f.
(b) Give the domain and range of f.
(c) John McDonough wants to rent the washer, but he can spend no more than $90. What is the maximum number of days he can use it?
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