What I want to do is pretty simple, but it's not going.
HTML
<select name="id_tipo_contacto" id="id_tipo_contacto">
<option value="empresa">Alugar Filmes/Séries</option>
<option value="casamento">Vender Filmes/Séries</option>
</select>
<div id="empresa" class="formulario"><h2 style=" color: #21BF16;
font-weight: bolder;">R$07,99 Por dia.</h2></div>
<div id="casamento" class="formulario" style="display:none;">R$70,00.</div>
jQuery
<script src="js/jquery-3.2.1.min.js">
var $j = jQuery.noConflict();
$j("#id_tipo_contacto").on('change', function(){
$j(".formulario").hide();
$j('#' + this.value).show();
});
</script>