Which of the following sets is closed under division?

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Mr. thompson took five of his children to the bowling alley the cost for children 12 and older is 350 the cost of four children under 12 inch to 25 he spent a total of 1625 how many of his children are 12 and order