I believe that x is <em>35</em>.
I hope this helps!
Literally any number besides 2, so it could be y=x+1, just change the constant number
Is BC=2.3 one of the options?
For that question, you can use the cosine rule, where;

In this case, we have..

Solving for BC with this will get you 2.250406, rounded off to the tenth is 2.3.
The answer is 3/10 cause 3 bars out of 10 are shaded in.
hope it helped!!!