ANSWER
[tex]y=3x+16[/tex]EXPLANATION
Given that Joel's salary is represented by x
Let Marcus salary be represented by Y
Note that Marcus salary is 3 times Joel's salary, this means
[tex]y=3x[/tex]
Also, $16 more means;
[tex]y=3x+16[/tex]Since Marcus salary is $16 more than Joel's weekly salary, the expression for Marcus weekly salary will be;
[tex]y=3x+16[/tex]