find k(3) for the function k(n) = 4n2.

Ithink i know it but i want to be sure so can you me out ?

Acompound inequality is graphed, and its graph consists of all real numbers. which open scentence could have resulted in this solution set r> 3 or r< -2. r< 3 or r< -2. r> 3 or r> -2. r< 3 or r> -2 plz asap

What is 2/3 - 1/3[tex] \frac{2}{3 } - \frac{1}{3} [/tex]