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practice exam 3 F09

# practice exam 3 F09 - 2 log 3 3 log 2 1 5 5 5-x x x 8...

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MTH 122 Test 3 - Review 4.8-5.7 Solve for x. 1. a) 1 5 5 - = - x x b) 0 10 29 10 3 1 3 2 = + + x x 2. Given the functions 4 2 ) ( + = x x f and 3 3 ) ( - = x x g , find a) ) )( ( x f f + b) ) )( ( x f g c) ) 6 )( ( g f 3. Find the inverse of 3 ) 5 ( 3 ) ( + = x x f and check that x x f f = - ) )( ( 1 and x x f f = - ) )( ( 1 . 4. If the points (-3, 2), (1, 4) and (6,0) are on the graph of ) ( x f , what are 3 points on the graph of the inverse ) ( 1 x f - ? 5. If you make an initial investment of \$7,000 at a rate of 6% compounded monthly, how much money will you have in 3 years? ( nt n r P A + = 1 ) 6. Evaluate each logarithm. a) ) 9 ( log 3 b) ) 2 ( log 2 c) 64 1 log 4 7. “Build up” each expression to a single logarithm. a) ) 3 ln( ) ln( 3 2 + - x x b) ) 1 2 ( log

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Unformatted text preview: ) 2 ( log 3 ) 3 ( log 2 1 5 5 5 +-+-x x x 8. “Break down” into multiple logarithms. a) -+ 2 3 4 ) 5 ( 1 log x x b) ) ) 2 ( 3 ( log 8 6-x x 9. Solve each equation. a) 18 ) 4 ( 2 1 5 =-x b) 15 2 8 = + x e c) 5 ) 2 ( log ) ( log 2 2 = + x x d) 4 2 ) 2 ln( 3 =--x 10. Given some data, be able to pick a function to model it and find the function using your calculator. Then be able to use your model to answer questions. See section 5.7 for examples....
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practice exam 3 F09 - 2 log 3 3 log 2 1 5 5 5-x x x 8...

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