MHF 4UA Unit II Workbook 34 Lesson 10 Unsupervised Mid-Course Review Parts A and B are Multiple Choice Questions: There are two marks for each question: . One mark for circling the correct answer. One mark for showing reason or calculations for your chosen answer. Two marks for circling correct answer and showing reason/calculation. One mark for a reasonable try to answer the question. Zero marks if left blank Exponential and Logarithmic Functions [20 marks] 1. V8 is equivalent to A. 4 B. 2% C. 2% D. (22) 2. What is the solution to 2*+1 = 4*? A. X = 1 B. X = 2 C. x = 4 D. X= -1 3. The expression log, 5+log2 10-log2 25 is equal to A. 1 B. 2 C. log 2 D. 2 4. Evaluate: log, 6+log3 4-10g3|3 A. log, 64 B. 2 C. 1083 3 D. 3.5 MHF 4UA Unit II Workbook 35 5. A technician places 50 mg of a certain radioactive substance into a laboratory chamber. After 10 min, there are 41 mg remaining. How long will it take for the material to decay to 1% of its initial amount if the half-life is 35 min? A. 0.9 mg B. 100 min C. 232.5 min D. 0.5 mg 6. What is the value of log, 16 3? A. 1/8 B. 6 C. -12 D. undefined 7. The graph of y = 2" is stretched horizontally by a factor of 5, and then translated 3 units down. Which of the following is the resulting equation? A. y=25(x-3) B. y=25x -3 C. y=23(x-3) D. y= 25 (x) -3 8. For the growth equation y = 35(1.7)*, the maximum value over the domain OSx58 is A. y = 1.7 B. y = 2441.5 C. y = 69.7 D. y = 35 9. If x" =3, then x*-5 equals B. 7 C. 22 D. 86 A. 76 36 MHF 4UB Unit II Workbook 10. The solution to the inequality (x? -9)(x2-1) 3 D. X > 3 or 1