QUESTION IMAGE
Question
the population of a town can be modeled using the formula $p = 10,000e^{0.02t}$, where $t$ is the number of years after 2012 and $p$ is the town’s population. which of the following equations can be used to find the number of years after 2012 that the population will be 15,000?
$t = \frac{\ln 5,000}{0.02}$
$t = \frac{\log 1.5}{0.02}$
$t = \frac{1.5}{0.02e}$
$t = \frac{\ln 1.5}{0.02}$
Step1: Establecer la ecuación de población
Dado el modelo de población \( P = 10000e^{0.02t} \), queremos encontrar \( t \) cuando \( P = 15000 \). Sustituimos \( P = 15000 \) en la fórmula:
\[ 15000 = 10000e^{0.02t} \]
Step2: Simplificar la ecuación
Dividimos ambos lados por 10000:
\[ \frac{15000}{10000} = e^{0.02t} \]
\[ 1.5 = e^{0.02t} \]
Step3: Aplicar el logaritmo natural
Tomamos el logaritmo natural de ambos lados para despejar el exponente. Recordamos que \( \ln(e^x) = x \):
\[ \ln(1.5) = \ln(e^{0.02t}) \]
\[ \ln(1.5) = 0.02t \]
Step4: Resolver para \( t \)
Dividimos ambos lados por 0.02:
\[ t = \frac{\ln(1.5)}{0.02} \]
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\( t = \frac{\ln 1.5}{0.02} \) (la opción correspondiente es la cuarta opción en la lista, es decir, la que tiene \( t = \frac{\ln 1.5}{0.02} \))