Each concession stand will receive 197 popcorn bags i used a calculator so it is right.
Assuming we have parallel lines, we can solve for x.
Since a = 3x - 10 (vertically opposite angles are equal),
3x - 10 = 2x + 15 (alternate angles are equal)
x = 25
Hence, angle a = 3(25) - 10 = 65°
Your answer is A) s + n because sum means to add and A is the only choice with addition.
Hope this Helps!!