Answer:
13
Step-by-step explanation:
replace the x with 5.
5^2-12=
25-12=13
f(5) = 13
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
<u>Step 1: Define</u>
f(x) = x² - 12
x = 5
<u>Step 2: Evaluate</u>
1:2
f( x ) = - 1/3 x + 5
.................................
the answer to your question is 13 mm