What number has factor of 2, 3, 12, 18 as multipes

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

What are the soultion(s) to the quadratic equation 40- x^2=0

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?