Question

If 3n+ 4n = 42, then n is
a. 4.
a. 2
c. 7.
D. 21

Answer 1

3n+4n=42

7n=42

n=6

I'd say none of the Above

Answer 2

none, n = 6

Explanation:

3n + 4n = 42

7n = 42

n = 6