Suppose ruth ann has 3 routes she can choose from to get from school to the library, and 5 routes from the library to her home. how many routes are there from ruth ann’s school to her home with a stop at the library?
a.60
b.25
c.15
d.9

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.