To find f(1), substitute 1 for x.
f(1) = (3(1)+7)²
f(1) = (3+7)²
f(1) = 10²
f(1) = 100
Answer:

Step-by-step explanation:
First we simplify:

Then we distribute:

Lastly, combine like terms:

Hope this helps!
Have a good evening! :)
You will need 82 1/4 1/2 tiles and 165 1/4 tiles