A plane flies 1,620 miles in 4 hours. what is the average distance it flies per hour?

405mph

Step-by-step explanation:

Just divide the miles from the hours and you will get the average speed in miles per hour (mph).

i'm not sure i quite understand, could you provide more information?

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.