Perform the indicated operation and write the answer in lowest terms. 
+ 
- 
A. 
B. 
C. 
D. 
Answer: B
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Find the average value of 
over the given region.
over the rectangular solid in the first octant bounded by the coordinate planes and the planes 
, 
, 
A. 25
B. 31
C. 28
D. 
Solve the problem.The number of VHS movie rentals has declined since the year 2000 due to the popularity of DVDs, as the following table shows. The exponential regression equation was found to be 
where x represents the number of years since 2000. According to the exponential model, what is the decay rate for the number of VHS rentals?
A. 0.8209 B. 1.8209 C. -8.92 D. 0.1791
Solve the equation.
= 4
A. 8 B. 4 C. -16 D. 16
In chemistry the formula of pH is pH=-log[H+] qhere H+ is the concentration of the hydrogen ions. A mixture of acetic acid has a pH of 2.9. Find the concentration of hydrogen ions in the mixture.
What will be an ideal response?