Need help, need domain and range

What is the least common multiple for 6 and 8? what is the least common multiple for 4 and 12 ? what is the least common multiple for 11 and 12? what is the least common multiple for 3 and 6?

If you apply the changes below to the linear parent function f(x)=x what is the equation of the new function vertically stretched by a factor of 3 flip over the x axis

Fran has 7 sheets of paper for a coloring project. if she only uses 1/3of a sheet of paper per draing how many drawings can ahe make?