Answer
$predicted~selling~price=133,300.8~dollars$
Work Step by Step
$ŷ =29.1+222.4x_1−58.5x_2+0.2038x_4$
For the given house we have, $x_1=0.18$, $x_2=3$, $x_3=1$, $x_4=1176$, $x_5=47$, $x_6=6$:
$ŷ=29.1+222.4\times0.18−58.5\times3+0.2038\times1176=133.3008$