Answer:
a)

b)

here is the answer hope that will help you
60-15=45. ......... ..............
I think the correct answer from the choices listed above is the last option. The number of points that lie on a period at the end of a sentence are infinite. <span>Thus, an infinite amount of them can reside on a finite sized period at the end of a sentence. Hope this answers the question.</span>
I think the Answer is the variable X