Question

6. Solve for x log2 (x + 7) + log 2x-3. a) x+7=3 b) 1 c) not possible x d) none of these 7. Evaluate log, a) x b) c) not possible d) none of these 8. What is the solution of -764? a) -2 b) 0 c) 2 d) 10 9. Find the approximate value of the expression log 16 160 a) 0.54 b) 1.83 c) 2.20 d) 0.9 10. Find the value of the expression 2.5 b) 12.2 c) 2.5 a) 30 d) Ax) = 6,5 -65 11. Which of the following is not an exponential function, a) Ax) 5(2.7) b) /x) = 772 c) An) - 1252412

Answer 1

6) logy Gu+7) + 3 X log 2 3 3 hig, (+3)(x) [x++)(x) = 2 2 2 2 cs x + 72 = 8 8 - Kt + x 47 149 + 32 - 719 2 :) 1 Cos) -8 Hence , 1 • X b

7) log, (13)* is 1. log ** L. 13 23 x 103) log, 43 @ (+)? 2+4 7 x+4 dog [+7* log + 10 (2+4) log 7 x log (14) (x+4) logt + zlogt (2+4+2] log? = 6 Y 2x+4 2 = 2 D 160 9) 16x10 1b log. DIL Legit + 1+ logo VIL log log, Hence from the options given, log 160 >1 and ea 160 1.83 log" © b)

10) In 2.5 loge 25 2.5 > e e n ) Exponential functione ale of type a Hence, 2 function polynomial f a 4 () is ܩܢ