# Warm Up Feb. 13 th

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Warm Up Feb. 13 th. Homework Answers. #25 57 ODD 25. 5 27. ln4 = 1.386 29. e -7 = 0.00091 31. 5 33. 0.1 35. 1 37. x 2 39. 5x+2 41. x 2 43. log570 = 2.756 45. ln10 = 2.303 47. -2log 5 0.2 = 2 - PowerPoint PPT Presentation

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Warm UpFeb. 13th

Homework Answers #25 57 ODD25. 527. ln4 = 1.38629. e-7 = 0.0009131. 533. 0.135. 137. x239. 5x+241. x243. log570 = 2.75645. ln10 = 2.30347. -2log50.2 = 249. 3-log2565 = -6.14251. -ln0.6 = 0.51153. 055. ln5 = 1.60957. 2ln108 = 9.364Homework Answers Circled Problems:79. e-3 = 0.05085. 10389. e2 2 = 5.38991. e 1 = 1.718 and e 1 = -3.71893. 295. No real solutionTime for the Quiz!!4Applications of Logarithms1. Carbon 14 has a half-life of 5760 years. Find the age of a specimen with 24% C-14 relative to living matter.

Find the time period required for \$7000 invested at 10% compounded semi-annually to grow to \$10,000.

The value of an investment is given by f(x) =237.50(1.052)x, where x is the number of 6-month periods. Find the number of complete periods until the investment is worth at least \$600.

4. Cell population doubles every 3 hours. How long would it take 4 cells to reach a count of 16,384 cells?

5. The number of people in the Denver suburban area has grown exponentially since 1950 according to the equation A(t)=Poekt. In 1950 there were 350,000 people, and in 1960 there were 705,300 people. How many people lived in the Denver suburban area in 1980?9Homework Solving Applications Using Logarithms WorksheetYou must show all work & solve using logsCheck answers using the calculator.1) Solve

2) Solve

3) Expand

4) Write as a single log:

_1272803016.unknown

_1272803045.unknown

_1272803091.unknown

_1272802942.unknown