Given data:
The numbers of points scored in 4 games are 42.
The expression for the given statement is,
[tex]\begin{gathered} 4\text{ games= 42 points} \\ 1\text{ game = 10.5 points} \end{gathered}[/tex]Multiply the above expression by 18 on both sides.
[tex]\begin{gathered} 18(1\text{ game) =18(10.5 points)} \\ 18\text{ games =189 points} \end{gathered}[/tex]Thus, in 18 games 189 points achieved.