Answer:
Smallest value of n = 4
Largest value of n = 10
Step-by-step explanation:
The sum of the shortest sides of a triangle must be greater than the longest side.
If 7 is the longest side, then:
n + 4 > 7
n > 3
n is an integer, so the smallest n can be is 4.
If n is the longest side, then:
4 + 7 > n
11 > n
n is an integer, so the largest n can be is 10.