At a parade, 1/4 of the participants have red hair, 1/6 of them have brown hair and the rest of them have black hair. which fraction of the participants have black hair?

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.!