Subtract and, if possible, simplify.- 
- 
A. - 
B. - 
C. 
D. 
Answer: B
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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. 5.9 g B. 4 g C. 2 g D. 0.1 g
Solve the application problem.The public swimming pool, which is a rectangle measuring 
by 
needs a new deck. The deck of uniform width that will surround the pool will be made of concrete. There is only enough money in the budget to cover 
with concrete. How wide should the path be?
A. 8 m B. 12 m C. 10 m D. 6 m
Use an integer to express the number.The stock market gained 18 points on Monday.
A. 18 B. -18
Solve the inequality. Graph the solution set and write the solution set in set-builder notation.x2 - 4x - 12 < 0
A. {x|-2 < x < 6}
B. {x|x < -2}
C. {x|x < -2 or x > 6}
D. {x|x > 6}