All you need to do is add 3.7 to the other side and since you don't need to divide anything from y, whatever you get will be your final answer. :)
Y= 45 degrees & x= 135 degrees
I believe it’s z=17
w=24
24-7= 17
<span>* carbon-14 levels in a sample are undetectable after approximately nine half-lives.
Nine half-lives pf carbon 14 is 51,570 years.
Source:
https://en.wikipedia.org/wiki/Radiocarbon_dating
</span>