Adding Google Adwords Code

Hello,
I have been asked to add Google Adword snippets to the following area
* The header of all pages
* The header of all pages above the closing head tag
* The footer
I do utilize a child enfold theme.
What is the easiest or best way for me to add the code? Thanks in advance for the help – Perry

This is what I was sent:

1. Please add this code to the footer.
<!– Event snippet for footer conversion page –>
<script>
gtag(‘event’, ‘conversion’, {‘send_to’: ‘AW-xxxxxxxxxxxxxxxxxxxxxx’});
</script>

2. Please add this code to the header on all pages.

<!– Global site tag (gtag.js) – Google AdWords: xxxxxxxxxxxx –>
<script async src=”https://www.googletagmanager.com/gtag/js?id=xxxxxxxxxxxx”></script&gt;
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag(‘js’, new Date());

gtag(‘config’, ‘AW-843671820’);
</script>

3. Please add this code to the header of all pages above the closing head tag.

<script type=”text/javascript”>
(function(a,e,c,f,g,h,b,d){var k={ak:”xxxxxx”,cl:”cxZ4CPyWm3kxxxxxxx”,autoreplace:”408-559-3403″};a[c]=a[c]||function(){(a[c].q=a[c].q||[]).push(arguments)};a[g]||(a[g]=k.ak);b=e.createElement(h);b.async=1;b.src=”//www.gstatic.com/wcm/loader.js”;d=e.getElementsByTagName(h)[0];d.parentNode.insertBefore(b,d);a[f]=function(b,d,e){a[c](2,b,k,d,null,new Date,e)};a[f]()})(window,document,”_googWcmImpl”,”_googWcmGet”,”_googWcmAk”,”script”);
</script>