Easy quick stuff pls

evaluate 11 - 19 - 4 - (-8).

-20
-4
-26
-2

Ineed asap graph the system of equations 2x+y=5; 14+7y=35

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.

Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle