Add the linear expressions: 7 (n - 2) + 5 (n + 4) + 3 (n + 1). (1 point)
To add the linear expressions, we distribute the coefficients:
7 (n - 2) + 5 (n + 4) + 3 (n + 1)
= 7n - 14 + 5n + 20 + 3n + 3
Now, we combine like terms:
= (7n + 5n + 3n) + (-14 + 20 + 3)
= 15n + 9
Therefore, the sum of the linear expressions is 15n + 9.