Answer :
In order to find which function will have the greatest value at x = 8, let's calculate the value of each function with this value of x:
[tex]\begin{gathered} y=3x \\ y=3\cdot8 \\ y=24 \\ \\ y=x^2-13x+60 \\ y=8^2-13\cdot8+60 \\ y=64-104+60 \\ y=20 \\ \\ y=1.11^x \\ y=1.11^8 \\ y=2.3 \end{gathered}[/tex]So the correct option is the first one.