The relation represents ages of students and the number of words they can write per minute. {(5,10), (6,20), (6,23), (7,35)}

What is the domain?

The domain is 5-7

Step-by-step explanation:

When we talk of the domain, we are referring to the range of the x-values

We are simply taking about how the values of x on the function ranges

From the question, we can see an x-range from 5-7, this is the domain we are looking for

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