HELP IDK WHAT TO DOOO

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)