A service call charge or fee is when you are charged a certain amount of money in order for a service technician to perform that specfic service.
R:{-46, 52}. You cannot repeat any numbers and the order is from least to greatest.
20% off means you pay 80% of the price so you multiply by 0.8, and 7% tax means you multiply by 1.07
Resulting cost = 18.99*0.8*1.07 = 16.26
Hope this helps let me know if im wrong!
