You want to park your boat at a local boat dock at 1pm but we are in a drought and you need to make sure that the water will be high enough. Your boat will get stuck if the tide is not at least 7 feet high. The high tide is at 5:00 am and a low tide at 10:00 am. At the low tide the water depth is 4 feet and at the high tide the water depth is at 10 feet. HELP, Need to sketch graph as well