For a fundraiser, Marcus needs to raise $500 in order to meet his goal. Marcus will walk a certain number of miles, and he will receive donations for each mile he walks. The table represents the amount of money he has left to raise after x miles of walking. x 3 5 7 9 11 13
g(x) $395 $325 $255 $185 $115 $45

What is the average rate of change over the interval [7, 11]?
A.
$70 per mile
B.
-$70 per mile
C.
-$35 per mile
D.
$35 per mile