Exam 5: Exponential and Logarithmic Functions and Equations

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Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator. - log3x5x8\log _ { 3 } \frac { x - 5 } { x ^ { 8 } }

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Solve the equation. - 4(3x5)=2564 ^{( 3 x - 5 )} = 256

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Solve the equation. - log(4x)=log3+log(x2)\log ( 4 x ) = \log 3 + \log ( x - 2 )

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Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator. - log8(8x)\log _ { 8 } \left( \frac { 8 } { x } \right)

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Solve the equation. - log3x+log3(x24)=4\log _ { 3 } x + \log _ { 3 } ( x - 24 ) = 4

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Graph the function. -Graph the function. -

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Graph the function. - f(x)=log5x f(x)=\log 5 x  Graph the function. -  f(x)=\log 5 x

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Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions. - 5log65+14log6(r2)12log6r5 \log _ { 6 } 5 + \frac { 1 } { 4 } \log _ { 6 } ( r - 2 ) - \frac { 1 } { 2 } \log _ { 6 } r

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Determine the correct exponential function of the form f(x) = bx whose graph is given. -Determine the correct exponential function of the form f(x) = b<sup>x</sup> whose graph is given. -

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Evaluate the logarithm without the use of a calculator. - log416\log _ { 4 } 16

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Write the exponential equation as an equation involving a logarithm. - 9X=819 ^ { \mathrm { X } } = 81

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Graph the function. -Graph the function. -

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Solve the problem. -A fossilized leaf contains 12% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14.

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Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator. - ln(e38)\ln \left( \frac { \mathrm { e } ^ { 3 } } { 8 } \right)

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Solve the equation. - 32x+3x6=03 ^ { 2 x } + 3 ^ { x } - 6 = 0

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Write the exponential equation as an equation involving a logarithm. - 53=x5 ^ { 3 } = x

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Solve the equation. - 32x1=643x32 ^ { x - 1 } = 64 ^ { 3 x }

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Write the logarithmic equation as an exponential equation. - ln(1e)=1\ln \left( \frac { 1 } { \mathrm { e } } \right) = - 1

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Solve the equation. Express irrational answers in exact form and as a decimal rounded to 3 decimal places. -ln x + ln (x + 6)= 4

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Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions. - log4(x3)log4(x+1)\log _ { 4 } ( x - 3 ) - \log _ { 4 } ( x + 1 )

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