We gots more lol
just per the instructions ​

Step-by-step explanation:

65+3x-1=4+8x(the sum of two interior opposite angle are equal to the exterior angle formed)

64+3x=4+8x

64-4=8x-3x

60=5x

60/5=x

12=x

substitute the value of x

4+8x

4+8*12

4+96

100

therefore angle ZAB=100 degree

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m