3. mm varies directly proportional to the cube of n and inversely proportional to p.

4. y varies directly as the square ofx and inversely as the cube of z

5. a varies jointly as p and q and inversely as the square of r.

6. write in equation form:
A. q varies jointly as s and l.
B. u varies jointly as x and the square root of z.
C. a varies directly as the cube of b and inversely as the product of c and d.​