Answer:
21.875 Miles
Step-by-step explanation:
If azul averages 12.5 miles per hour, we can multiply the time it took azul to bike up the mountain trail times the distances per hour
6.9081 x 10^{9}
x=-11
x+8=-3
x=-3-8 :- collect like term
since we are adding two negative numbers, we will let the number be negative but add them.
Hope it helps :)