Is there a formula for these kind of questions?

m = 55°

Step-by-step explanation:

The 2 top interior angles of the triangle are adjacent angles on a line, then

180° - 115° = 65°

180° - 120° = 60°

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the 2 angles fro 180° for third angle

third angle = 180° - (65 + 60)° = 180° - 125° = 55°

m is vertically opposite the third angle and congruent to it

m = 55°

81 seats

step-by-step explanation:

if you multiply 0.65 times 125 then you get 81.5 seats. well since you can't have half of a seat you have to round down and get 81 seats in the no children zones. that leave 44 seats outside of the no children zone.