To do a two-column proof, you must know the definitions of the terms that are being used. Also, you must know the postulates and theorems you have learned so far. You look at the given information, and using the definitions, postulates, and theorems, you reason in your mind how to go from the given to the conclusion, step by step. You write each step and the accompanying reason that allows you to conclude each step.
Answer:
The formula for the final velocity, bf in terms of initial velocity, v1, acceleration, a, and time is given as

Step-by-step explanation:
Given:

To Find:
bf = ?
Solution:
Acceleration:
Acceleration is defined as the ratio between the change in velocity of an object and the time it takes for the object to change the velocity.
In formula, this is written as:

Where,
'a' is the Acceleration.
'vf' is the final velocity
.
'vi' is the initial velocity.
't' is the time it takes for the object to accelerate from vf to vi
Here it is given as

So,
Where,
'a' is the Acceleration
'bf' is the final velocity
.
'v1' is the initial velocity.
't' is the time it takes for the object to accelerate from bf to v1.
On Solving the above equation 'bf' we get
....As required
Answer:
Is there a picture to the question?
Step-by-step explanation:
Answer:

Step-by-step explanation:

Divide both sides by 4:
__________________________________
Let X be the number of years
784-25x.....equation A
817-36x.....equation B
Equation A=Equation B
784-25x=817-36x
Move terms
36x-25x=817-784
Solve for x
11x=33
Divide both sides by 11
X=33/11
X=3 years
Hope it helps!