Write an algebraic equation and use it to solve the problem.How much pure acid should be mixed with 2 gallons of a 50% acid solution in order to get an 80% acid solution?

A. 1 gal
B. 5 gal
C. 8 gal
D. 3 gal


Answer: D

Mathematics

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What will be an ideal response?

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A.   
B. -  
C. -  
D.  

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A. y = -x - 1 B. y = x - 1 C. y = x + 1 D. y = -x + 1

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