2160 divided by 5.5 = 392.7 hopefully this is right!
The student went wrong in step three. the solutions should have been -3 and 5
The first day of the month would be the first saturday.
The answer to your question is positive
By using the information in the question, find a equation in the y=mx+b form. Then, plug in 37 as the x value and solve for y.