[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
Let's find the value of given expression for x = 5 ~
[tex]\qquad \sf \dashrightarrow \:3(3x + 5)[/tex]
[tex]\qquad \sf \dashrightarrow \:9x + 15[/tex]
now, plug in the value of x as 5
[tex]\qquad \sf \dashrightarrow \:9(5) + 15[/tex]
[tex]\qquad \sf \dashrightarrow \:45 + 15[/tex]
[tex]\qquad \sf \dashrightarrow \:60[/tex]
so, the equivalent value is 60
