ANSWER: -155 feet
EXPLANATION
-210 is the starting point
11 is the number of feet per minute
X is the number of minutes
We know x = 5 so we should write it out.
-210 + 11(5)
Now we can solve it.
11 x 5 = 55
So now we have
-210 + 55
-210 + 55 = -155
Hope this helps, let me know if you need a better explanation