I think it’s 4 but not sure
Answer:
Yes, <em>z</em> will be greater than <em>x.</em>
Step-by-step explanation:
Given expression is 
now let <em>y = 2 </em>and <em>x = 1</em>
Then, 
where
i.e. <em>3 > 1</em>
on simplifying the given expression in terms of y

now suppose if <em>x = 7 and z=3 </em>then,

which gives value of y in terms of negative integer which is not possible according to the given statement since y is a positive integer. Therefore, if y is a positive integer then z will be greater than x.
100°+(4y+25)+(3y+20)=180°
100+4y+25+3y+20=180
7y+145=180
7y=35
y=5
100°; 45°; 35°
hope it helped. I have solved in the same paper. plz don't mind.
The first one is B and the second one is C