Hi there!
Let's solve this problem step by step!

To find f(3) we must substitute x = 3 into the formula.

Now we use PEMDAS (Parenthesis, exponents, multiply, divide, add, subtract) to find our answer.
Work out the exponents inside the parenthesis first.

And finally multiply.

Hence, the answer is D. 64.
~ Hope this helps you!
The correct answer is x=5
Step-by-step explanation:
o ne demek kaarrrşiömm hııı
Answer:
42 canteens
Step-by-step explanation:
1 gal = 3 canteens
14*3=42