You can use the slope formula or just calculate

So for the first problem you run 3 units right and rise 5 units so

2. Notice the y axis goes by 2 units.

3.

4.

Please let me know if you have questions
Desmos.com and plug in the equation
0.38p
To get the percent of something, you turn the percent to a decimal and multiply it to the number.
Here, we want the expression to get 38% of p. So we turn 38% to 0.38 and multiply it to p. Since we don't know what p is, we have to leave it as 0.38p
The answer is 0.38p
Hope this helps!