How do I find area between functions using integrals if there are more than two functions as shown in the attached pdf as #15?

Any input would be greatly appreciated!

Thanks in advance!

P.S.

The functions are y = 1/x, y = x, y = x/4, x >0. You don't really need to count x>0 since the restriction is within the other three functions assuming I sketched it correctly (as shown in the pdf file).