Answer:
3.87298334621
Step-by-step explanation:
I used a calculator btw
It is D) 14 Units because it takes seven units to get from -7 to zero and 7 units to get from 0 to 7. there fore 7+7=14.
Start with the given expression:

.
Simplify by grouping like terms:

Isolate variable terms:

Solve for x:


Therefor the expression holds for integers less than or equal to 14.
As a check:



TRUE
and:



FALSE
The only choice that fits is
A.
Oliva - 40.64
Patty - 40.39
Miguel - 41.44
Chad - 40.46
Patty had the lowest time, so therefore, Patty finished the race in the least amount of time.