From the problem, Joe starts with $750 and he adds $60 each week.
His money will be :
[tex]S=750+60W[/tex]where S = amount of money after W weeks.
W = time in weeks
The total amount of money after 16 weeks will be :
[tex]\begin{gathered} S=750+60W \\ S=750+60(16) \\ S=1710 \end{gathered}[/tex]ANSWER :
$1710