{(-5, -5),(-1,-2), (0, -2), (3, 7), (8,9)} A. Yes, because every x-value corresponds to exactly one y-value.
B. No, because two of the y-values are the same.
C. Yes, because there are two x-values that are the same.
D. No, because one x-value corresponds to two different y-values.

step-by-step explanation:

the answer is 128

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.

it would be less than 25

step-by-step explanation: