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Mathematics, 27.09.2019 11:00 Josias13

1) a scuba diver dives beneath the surface of the water 34 feet. he swims up 13 feet closer to the surface, then swims back down another 5 feet. what is his net feet below the surface?

2) a plumber charges $50 each visit plus $15 per hour. how many hours did the plumber work if he earned s total of $220?

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