Answer:
The value of f(-1) is;
[tex]f(-1)=7[/tex]Explanation:
Given the function;
[tex]f(x)=3x^2+4[/tex]We want to solve for f(-1), which is the value of the function f(x) a x=-1.
To get f(-1) we will substitute -1 for x in the function f(x);
[tex]\begin{gathered} f(x)=3x^2+4 \\ f(-1)=3(-1)^2+4=3(1)+4 \\ f(-1)=3+4 \\ f(-1)=7 \end{gathered}[/tex]Therefore, the value of f(-1) is;
[tex]f(-1)=7[/tex]