The cost in dollars $y$ of producing $x$ computer desks is given by $y=110x+1000.$

a$.$ Complete the table to the right.

b$.$ Find the number of computer desks that can be produced for $$5400.($Hint: Find $x$ when $y=5400.)$

$\begin{array}{cc}x& y\\ 100& ?\\ 200& ?\\ 300& ?\end{array}$