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quizsoln3

# quizsoln3 - <1(will accept r<1 Constant r =1 b Using...

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Name:___________________________ Math 155 Quiz 3 12 September 2006 Instructions : This quiz is closed book and closed notes. You may use a calculator. Label your answers and show all work. 1. (3 pts) Solve the following equation for x . Approximate your answer to 3 decimal places. 4 e 2 x +1 = 20 2. (3 pts) Give values for each of the following. a) Using the solution b t = ( r ) t b 0 , give values of r where the population growth is increasing, decreasing, and constant. Increasing: r >1 Decreasing: 0 < r
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Unformatted text preview: <1 (will accept r <1) Constant: r =1 b) Using the exponential function S ( t ) = S (0) e at , give values of α where the population growth is increasing, decreasing, and constant. Increasing: Decreasing: < Constant: = 3. (4 pts) Write the equation for the following cosine function. e 2 x +1 = 5 2 x +1= ln(5) x = ln(5) - 1 2 x 0.305 Average = 3 Amplitude = 0.5 Maximum = 3.5 Minimum = 2.5 Period = 2 Phase = 0 f ( x ) = 3+ 0.5cos( px ) x...
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