The value of square root 13 is between what

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

If 25% of y is 30, what is 60% of y?

For what value of (y) is 3^3/3^y =1/9