Answer is C hope this helps
Answer:

Step-by-step explanation:
f=v+at
It requires you to make a the subject of the formula
f-v=at
Dividing both sides by t then

Therefore, the equivalent for a is 
Answer: 20
Step-by-step explanation: how i got the answer was to multiply everything by two. then add everything together.
That equal 1 because they are the same