Answer:
27
Explanation:
If n = 4, all we need to do is substitute the number into the equation.
6n + 3
= 6(4) + 3
= 24 + 3
= 27
I recommend checking out a few more problems like these to get the gist of it. You'll be using this a lot in the future! I recommend taking a look on Kahn Academy for more learning.
Good luck!