# 4.2 - • ln x =-2ln 3 5 • ln x = 14 • ln x = 2ln 3 5...

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1 ) Use the logarithm rules to simplify #16. (5pts)   2ln x + (1/2)ln 4 + ln x^2   2ln x + 2ln (2-x)   ln x + ln (4-x^2)   2ln x + (1/2)ln (4-x^2) 2 ) Use the logarithm rules to simplify log(x^5y^8z^(-2)). (5pts)   log x + log y - log z   5log x + 8log y - 2log z   log x^5 + log y^8 + log z^(-2)   -5log x - 8log y + 2log z Answer : Corre ct Points: 5 3 ) Solve #22 for x. (5pts)   x = 16   x = 4   x = 2   x = 8 Answer : Corre ct Points: 5 4 )

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Find ln x for #38. (5pts)   ln x = 3ln 10   ln x = 10ln 3   ln x = -10ln 3   ln x = -3ln 10 Answer : Corre ct Points: 5 5 ) Find ln x for #40. (5pts)
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Unformatted text preview: • ln x = -2ln 3 + 5 • ln x = 14 • ln x = 2ln 3 + 5 • ln x = ln 14 • 6 ) • How quickly will money double if it is invested at an annual interest rate of 8% compounded continuously? (5pts) • 9.2147 years • 9.6643 years • 8.6643 years • 8.2147 years • 7 ) • If an account that earns interest compounded continuously takes 15 years to double in value, how long will it take to triple in value? (5pts) • 21.8156 years • 21.7744 years • 23.7744 years • 23.8156 years Answer : Corre ct Points: 5...
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