If my child had 115 of 149 questions right what percentage is the grade

Can someone me out here and the tell me the greatest common factor

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.!

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.