Translate to a proportion and solve. 45% of what is 72?
A. 63
B. 0.63
C. 160
D. 1600
Answer: C
Mathematics
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Use the information in the table to answer the question.
Which category and year represents the greatest decrease?
A. Decorations in 1992 B. Telephone in 1992 C. Postage in 1993 D. Supplies in 1993
Mathematics
Evaluate the integral by making a substitution and then using a table of integrals.
A. 
- 
ln 
+ C
B. 
+ 
sin-1 
+ C
C. 
+ ln 
+ C
D. 
- 
ln 
+ C
Mathematics
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
Mathematics
Use a calculator to approximate the square root. Round the square root to the nearest thousandth.
A. 2.449 B. 2.131 C. 2.446 D. 2.454
Mathematics