Find an equation y = mx + b that models the quantity y after x units of time.A quantity is initially 6 and remains constant.

A. y = -6
B. y = 6
C. y = 6x
D. y = -6x


Answer: B

Mathematics

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Solve the problem.In a chemical reaction, the rate at which the amount of a reactant changes with time is proportional to the amount present, such that , when t is measured in hours. If there are of reactant present when t = 0, how many grams will be left after ? Give your answer to the nearest tenth of a gram.

A. 2.2 g B. 6.7 g C. 4.5 g D. 0.1 g

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Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.3(x + y)

A. 3xy B. 3x + y C. 3x + 3y D. 3x - 3y

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Solve.When 18 is subtracted from 7 times a certain number, the result is 213. What is the number?

A. - 
B. 1473
C. 44
D. 33

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Use the line graph to answer the question.The line graph shows the 2001 sales data for the Big "D" company. Which month had the lowest sales?

A. Month 3 B. Month 7 C. Month 2 D. Month 5

Mathematics