High School

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What is the solution to the equation below? Round your answer to two decimal places.

[tex]3 \cdot e^x = 11.76[/tex]

A. [tex]x = 50.40[/tex]
B. [tex]x = 0.59[/tex]
C. [tex]x = 1.37[/tex]
D. [tex]x = 40.98[/tex]

Answer :

We start with the equation:
$$3 \cdot e^x = 11.76.$$

**Step 1: Isolate the exponential term.**
Divide both sides by 3:
$$e^x = \frac{11.76}{3} = 3.92.$$

**Step 2: Apply the natural logarithm.**
Take the natural logarithm of both sides:
$$\ln(e^x) = \ln(3.92).$$
Since $\ln(e^x) = x$, this simplifies to:
$$x = \ln(3.92).$$

**Step 3: Compute and round the result.**
Evaluating $\ln(3.92)$ gives approximately:
$$x \approx 1.366091653802371.$$
Rounding this to two decimal places:
$$x \approx 1.37.$$

The final answer is $\boxed{1.37}$.

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