n class="va">m</span> <span class="op">+</span> <span class="fu">scale_x_continuous</span><span class="op">(</span>breaks <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">2</span>,<span class="fl">5</span>,<span class="fl">8</span><span class="op">)</span>, labels <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/expression.html" class="external-link">expression</a></span><s