What is the domain of this function? 1
2
2
4
3
9
4
16
A. {1, 2, 3, 4, 9, 16)
B. {1,2,3,4}
C. {2, 4, 9, 16}
D. {1, 2}

The domain is the input values, which would be the numbers that have the arrows pointing away from them.

This would be the 4 numbers in the oval on the left side.

The answer is B. {1,2,3,4}

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