Answer:
12+# OR 12+x
Step-by-step explanation:
Increased by 12 means plus 12. The word "is" in equations is an equal sign. So far, you have 2n+12. On the other side of the equal sign, you have 31 less than 3 times a number.
2109 meter squared
A=12 in
perimeter=36 in
Step-by-step explanation: give me brainly
The answer is B
Hope this helps
Brainliest??