The distance between two cities is ninety miles, and a woman drives from one city to the other at a rate of 45 mph. at what rate must she return if the total travel time is three hours and forty minutes?

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.!