What is a LCM.

For example:

What is the LCM of 9 and 12

From my understanding i think its
3, because 3x3 = 9 and 3x4 = 12

Am i right?

What is the quadric regression equation that fits these data

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.