Ithink the answer is a but i'm not sure! can someone me? you!

I think you are right.

4x + 20 < 40        Subtract 20 from both sides

4x < 40 - 20

4x < 20                Divide by 4

x < 20 / 4

x < 5                    Somewhere very near 5 is as close as the solution gets. So at 5 you use an open circle. Because near 5 is the largest possible solution, the arrow heads left. Pat yourself on the back. These things are not easy.

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.