Will mark! i'm stuck and need to get this ! 6th grade !

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

What dimensions can créate more than one triangle ?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters