Solve the problem.A computer manufacturer has three outlet stores that sell its four computer systems. The following table shows the numbers of systems sold by the three stores in July.
The prices of the systems are: $1200 for System 1, $1500 for System 2, $1600 for System 3, and $2200 for System 4. Write the information from the table as a 4 x 3 matrix B. Write a row matrix A for which the entries represent the prices for the systems. If 
find c12. What does this entry of C represent?
A. c12 = 156,000. c12 represents the sales of System 2 at all stores in July.
B. c12 = 188,000. c12 represents the total sales at Store 2 in July.
C. c12 = 166,000. c12 represents the total sales at Store 1 in July.
D. c12 = 176,000. c12 represents the total sales at Store 3 in July.
Answer: B
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Solve the problem.Find the volume generated by revolving the area bounded by 
, 
and 
about the 
A. 
(e25/2 - e1/2)
B. 2?(e25/2 - e1/2)
C. ?(e25/2 - e1/2)2
D. ?(e25/2 - e1/2)
A function f(x), a point x0, the limit of f(x) as x approaches x0, and a positive number ? is given. Find a number 
such that for all x, 0 < 
< ? ? 
< ?.f(x) = -9x + 2, L = -25, x0 = 3, and ? = 0.01
A. 0.002222 B. 0.001111 C. -0.003333 D. 0.004444
Solve the problem.You brake your car from a speed of 65 mph. The table shows data that represent your car's speed versus the amount of time elapsed from the moment that you began to brake.
Graph the data. What is the slope of the line segment that represents the period of time during which the speed decreases?
A. 
The slope of the decrease is -10.
B. 
The slope of the decrease is -9.
C. 
The slope of the decrease is -9.
D. 
The slope of the decrease is 9.
Determine whether f is a geometric sequence.
A. Yes; n3 B. No