well, the house is increasing by 10% each year, so whatever the current price is, the new price is THAT plus 10%, well, since THAT is 100%, shouldn't that be 100% + 10%, or 110%?
[tex]\bf \qquad \textit{Amount for Exponential Growth}\\\\
A=I(1 + r)^t\qquad
\begin{cases}
A=\textit{accumulated amount}\\
I=\textit{initial amount}\to &120,000\\
r=rate\to 10\%\to \frac{10}{100}\to &0.10\\
t=\textit{elapsed time}\\
\end{cases}
\\\\\\
A=120000(1+0.10)^t\implies
\begin{array}{lclll}
A=120000(&1.1&)^t\\
&\uparrow \\
&rate\\
&of\\
&growth
\end{array}[/tex]
1.1 is the decimal format, but you can simply multiply it by 100 to get the percentage, 1.1 * 100 = 110%
