Can someone please simplify 6(x+3)

What are the sotions to the quadratic equation 9x^2=4

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?