Expand the expression log (xy/4) show your work trying to lean it

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Divide. write in the simplest form. 4 1/6 divided by 10