Here is the answer:
n+n+1+n+2
=3n+3. Hope it help!
Answer:


Step-by-step explanation:
Required
As a decimal to nearest thousandth
Solving (a): 78.4%

Express as fraction

Solve fraction
----- This is already in thousandth place
Solving (b): 29%

Express as fraction

Solve fraction

Approximate

Answer:
22n - 11
Step-by-step explanation:
The perimeter of the shape shown is 63 units