Answer:

Step-by-step explanation:
The equation provided is:
d = 5x + 10xf
We need to isolate x from this equation.
Factoring out x from the right side gives us,
d=x(5+10f)
To find x, divide both sides by (5+10f),

Thus, this represents the sought value for x.
It should be 94, I hope this provides assistance
After 1 hour >> 44 miles apart
after 2 hours >> 88 miles apart
after 2.5 hours >> 110 miles apart
Two and a half hours