A plumber charges an initial $75 tip fee plus $60.00 for every hour worked. How much does the plumber charge for 4.5 hours of work? D. $345 C. $315 B. $270 A $135
Explanation: 4 hours means 60 * 4 = 240. Add the initial $75 tip fee which equals to 315. Divide the hour charge of 60 dollars to 2: so we get 30. Add 30 to 315, and we get 345.
