24*70 i need help please

What could explain what happened when the time was equal to 120 minutes

Plz hurry evaluate the expression a+b where a=8 and b=19

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.!