CPM Homework Help : PC Problem 8-113

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8-113.

Solve each equation for the exact value of x.

$\ln(x)=3$
Hint (a):
$e^{\ln x} = e^{3}$
Answer (a):
$x = e^{3}$

$e^x=200$
Hint (b):
$\ln e^{x} = \ln 200$
Answer (b):
$x = \ln 200$

$5\ln(x+1)=20$
Hint (c):
$e^{\ln\left(x+1\right)} = e^{4}$

$e^{(x+2)}+20=100$
Hint (d):
$e^{\left(x+2\right)} = 80$
$\ln e^{\left(x+2\right)} = \ln 80$

Computer without a calculator.

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