Yes; his answer is correct.
John can do this by multiple ways, but most likely he just remembered this one. Here are some ways.
1. He used his fingers; he put 1 finger, then another finger, and got 2 fingers up. The answer is 2.
2. He remembered it; usually Kindergarteners learn this and this is very easy to remember.
3. He used the things around him; I have 1 crayon then add another, how many do I have? 2.
Answer:
t=9
Step-by-step explanation:
The exterior angle theorem states that the exterior angle is sum of two interior angles. So, According to this theorem

Solve for p ~
- Cancel equal terms on both sides

- Swap the sides of the equation

<h3><em>The value of p is 46°...</em></h3>
Look up 6.2 percent of 795000 and then divide that in half and add it to 795000