<?php
$firstName = 'Tony';
$lastName = 'Stark';
$jobTitle = 'CEO of Stark Industries';
$qualification = 'MSc in electrical engineering and physics';
echo ' <p>Name: ' . $firstName . ' ' .' is ' . $jobTitle . ' </p>;
echo ' <p>Education: He holds a ' . $qualification . ' .</p>;
?>
Your strings are missing some of the matching quotes.
It is simpler to put php variables inside of double-quoted strings -
echo "<p>Name: $firstName, is $jobTitle.</p>";
echo "<p>Education: He holds a $qualification.</p>";