The standard form:

We have:
<em>multiply both sides by 2</em>
<em>add x to both sides</em>

3 days. You can’t do two because that’s not a whole number. However 63 divided by 3 is 21 which is his best plan for the most pages in the fewest days.
Step-by-step explanation:
The equation that fits the data is y = 2x + 3.
I think a and c. I really don’t know tho