Solve the problem. Round your answer to the nearest tenth, when appropriate. Use the formula 
, as needed.Find the pH if [H3O+] = 5.3 × 10-2.
A. 2.3
B. 1.7
C. 2.7
D. 1.3
Answer: D
Mathematics
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Write the rational expression in lowest terms.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The radius r and height h of a cylinder are changing with time. At the instant in question, 
and 
At what rate is the cylinder's volume changing at that instant?
A. 0.25 cm3/sec B. 0.13 cm3/sec C. 1.01 cm3/sec D. 0.5 cm3/sec
Mathematics
Find the exact value of the trigonometric expression without the use of a calculator.If sin ? = - 
, 
< ? < 2? and cos ? = - 
, ? < ? < 
, find the exact value of sin (? - ?).
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.log3 x + log3(x - 24) = 4
A. {-3, 27} B. {27} C. {53} D. ?
Mathematics