Question: REDTLE MHF 4UB Workbook Unit 1 38 UNIT I KEY QUESTIONS [30% of lesson 5] There are 15 multiple choice questions here worth 2 marks

REDTLE MHF 4UB Workbook Unit 1 38 UNIT I KEY QUESTIONS [30% of lesson 5] There are 15 multiple choice questions here worth 2 marks each. All questions are based on material in lesson 1 - 5 and are intended to be review for the final test 1 mark - circle the letter of the answer that best answers the question. 1 mark - show why you chose that answer in the space below the choices. MHF 4UB Workbook Unit 1 40 12. If (81)(27)2x-5 =93-40, then x = A. - 4a+5 B. - 2a+- 10 4a 17 3 C. - 2a + 4 D. 3 6 13. Evaluate log, 2+ 3log4 8 A. log4 48 B. 10 C. 5 D. 2.5 14. The expression loga (x ) is equivalent to A. logaxlogy B. ylogax C. xlogy D. log.x + log. y 15. The half-life of a radioactive compound is 180 days. Approximately how many days will it take 200 g of the compound to decay to 65 g? C. 324 days D. 382 days A. 88 days B. 292 days

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