Answer:
To answer this question, there needs to be choices provided since the description you provided states "which of the following".
Step-by-step explanation:
Plug in 3a for x,
2(3a)^2 is 18a^2, then add five
Answer: 18a^2 +5
Answer:15 miles
Step-by-step explanation: well he biked for all of the 15 miles!?
All of those numbers are rational, except the square root of 12.