Aman travels a distance of 20 miles at 60 miles per hour then returns over the same route at 40 miles per hour. find the average rate per hour.

a)50
b)48
c)47
d)46

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.

1e+27

step-by-step explanation: