Answer:
O f(x) = -x-1
Step-by-step explanation:
We want to isolate the 'y' variable, so we will subtract 7 from both sides.
y = x + 6 - 7
y = x -1
The difference of the helicopter and the submarine being 18.5 meters makes 18.5+-7.75=10.75
Yes, it isn’t a fraction, decimal, or mixed number.