How many gallons of gasoline that is 6% ethanol must be added to 2000 gallons of gasoline with no ethanol to get a mixture that is 4% ethanol?

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms