3-10"></a>                            <span class="dv">3572</span> <span class="op">+</span><span class="st"> </span><span class="fl">0.325</span> <span class="op">*</span><span class="st"> </span>(income <span class="op">-</span><span class="st"> </span><span class="dv">37000</span>),</span>
<span id="cb3-11"><a href="#cb3-11"></a>                            <span class="kw"><a href="https://Rdatatable.gitlab.io/data.table/reference/fifelse.html">ifelse</a></span>(income <span class="op">&lt;</span><span c