Please solve 4, 5, 6, 7, 8 and show steps and some explanation

4. If we know log, I = u, log; y = v, what is log.()? 5. Solve the equation log r + log 12 = 3. 6. If log2 x = 50, log3 y = 90, what is the value of log, y? 7. Graph the functions 2, ()*, log2 Z. 8. Convert the following angles to radians or to degrees. (a) 40. (b) 240. (c) -200. (d) (radians). (e) -10m (radians). (f) = (radians)