Your model train is 18 inches long. it is an exact model of a train that is 72 feet long. a window on the train is how many times wider than a window on the model?

48 times wider

Step-by-step explanation:

Convert length of train to inches:

inches

Divide the length of the train by the length of the model train to find the scale.

so, 864 ÷ 18 = 48

and since the model train is proportional to the train, the window on the train is 48 times wider than the window on the model.

what is the starting amount? the question is not clear sorry.

step-by-step explanation:

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.