Which rule describes the composition of transformations
that maps BCD to B"C"D"?

idk i would have to be there to under stand it

step-by-step explanation:

idk i would have to be there to under stand it

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.

only 2 solutions are positive

also the part with what number should be added to both sides of the equation

should be 2 or 4