Step-by-step explanation:
Substitute f(-5) into the function:
[tex]f(-5)=3(5)^{2}+5[/tex]
Simplify Exponent:
[tex]f(-5)=3(25)+5[/tex]
Multiply:
[tex]f(-5)=75+5[/tex]
Add:
[tex]f(-5)=80[/tex]
