Answer:
6n+1
Step-by-step explanation:
Eliminate the parenthesis by changing the symbol of each term inside
3+[5n-2+n]
Eliminate the bracket and group similar terms
5n+n+3-2
Simplify terms
$16.68
multiply 4.55 by 11/2
4.002
12 x (.5) = 6
6 x (.667) = 4.002