Question

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?

Please help me with these two questions

Answer 1

1. 0 - 34 + 13 - 5 = -26.....26 ft below the surface

2. y = 15x + 50
    220 = 15x + 50
    220 - 50 = 15x
    170 = 15x
    170/15 = x
    11 1/3 = x......he worked 11 1/3 hrs.......not sure about this...because it does not specify how many visits he made...but if this was just for 1 visit, then he worked 11 1/3 hrs