So the function is:
[tex]f(x)=5x^2-2[/tex]and f(-3) will be replacing the x = -3 in the original function:
[tex]f(-3)=5(-3)^2-2[/tex]and now we can solve the operations:
[tex]\begin{gathered} f(-3)=5\cdot9-2 \\ f(-3)=45-2 \\ f(-3)=43 \end{gathered}[/tex]