Solve the problem.How much pure acid should be mixed with 9 gallons of a 50% acid solution in order to get an 80% acid solution?
A. 4.5 gal
B. 22.5 gal
C. 13.5 gal
D. 36 gal
Answer: C
Mathematics
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A. 19.87 B. 18.87 C. 19.97 D. 18.97
Mathematics
Write the fraction or mixed number as a decimal. Round to the nearest thousandth if necessary.
A. 2 B. 0.5 C. 5 D. 0.05
Mathematics
Write an equation that expresses the relationship. Use k for the constant of proportionality.p varies directly as q and inversely as r.
A. p = 
B. p = 
C. pqr = k
D. p + q - r = k
Mathematics
Match the system of inequalities with the appropriate graph.3x - 2y ? 6 x - 1 ? 0
A. 
B. 
C. 
D. 
Mathematics