If my parents give a waiter a 15% tip if the total amount of lunch was 42.00 what should be paid to the waiter as a tip

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!