3. A long-running blockbuster movie has worldwide box-office receipts that
can be modeled by the function B(x)=X^2/X^2+4
where B(x) is measured in millions of dollars, and x is the number of months
since the movie’s release.
a. What are the total receipts after the first month? Second month? Tenth
b. What will the movie gross in the long run (when x is very large)?