1. (30 marks - 10 marks each) Using the rules of indices, simplify the following expressions: (a) (b) (215 67)10 + (20 /y) 10 (c) roy8 2. (30 marks - 10 marks each) Write down the following expressions as a single log: (a) 3log, x - log, y - log2 4 log; I (b) 10 ( loge + + - log& ) (c) 8 + 4logy - log. yz 3. (20 marks - 10 marks each) Solve the following inequalities: (a) 2x' - 3x +1