4 because you’re finding sizes for multiple people while the other questions are just asking for one thing
To find the angle of vertex E,we need to first find the sum of interior polygons to determine x:

In this case,the equation would be:
(7-2)×180°
=5×180°
=900°
We can then find the value of x:
(4)6x+(2)2x+8x=900°
24x+4x+8x=900°
36x=900°
x=25°
The interior angle of vertex E:
6x=6(25)=150°
Therefore,the interior angle of vertex E is 150°.
Hope it helps!
2, left direction (or negative if that’s an option)
She can expect 70 to be ads since there is 10 times more emails so 7 times 10 is 70 so 70 ads