The population of a city can be modeled using the formula $\displaystyle{P}={100},{000}{{e}}^{{{0.05}{t}}}\usepackage{cmbright}\Huge\$ , where t is the number of years after 2012 and P is the city's population. Which of the following equations can be used to find the number of years after 2012 that the population will triple to 300,000?