Given the function:
[tex]k(x)=2x^2-3[/tex]To find the value of k(9), we will substitute with x = 9 into the function k(x)
so,
[tex]\begin{gathered} k(9)=2\cdot9^2-3 \\ k(9)=2\cdot81-3=162-3 \\ \\ k(9)=159 \end{gathered}[/tex]so, the answer is option C) 159
