Part 1)
In this problem we know that
\(4y\°+112\°=180\°\) ------> by supplementary angles
solve for y
\(4y\°=180\°-112\°\)
\(y=68\°/4\)
\(y=17\°\)
Part 2)
In this problem we know that
\(7x+7=112\°\) ------> by vertical angles
solve for x
\(7x=112\°-7\°\)
\(x=105\°/7\)
\(x=15\°\)
therefore
the answer is the option A
\(x=15\°, y=17\°\)
