Need answers ! the graph represents revenue in dollars as a function of greeting cards sold.
which equation represents the function shown on the graph?

Step-by-step explanation:

From the given graph we can see that it is passing through origin (0,0) and (1,4).

The equation of a line passing through and is given by :-

Now, The equation of a line passing through (0,0) and (1,4) is given by :-

y=4x

Step-by-step explanation:

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