Solve the problem.Computer Incorporated sells computer systems. The company profit is given by the function 
for x ? 20, where x is the number of computer systems sold. Interpret the slope of the graph of f as a rate of change.
A. The company profit increases by $100 for each computer system that is sold.
B. The company profit decreases by $138 for each computer system that is sold.
C. The company profit increases by $133 for each computer system that is sold.
D. The company profit increases by $138 for each computer system that is sold.
Answer: C
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Solve the problem.A company adopts an advertising campaign to weekly add to its customer base. It assumes that as an average fifty percent of its new customers, those added the previous week, will bring in one friend, but those who have been customers longer will not be very effective as recruiters and can be discounted. A media campaign brings in 10,000 customers initially. What is the expected total number of customers with whom the company can expect to have dealings?
A. 30,000 customers B. The sum diverges to infinity. C. 20,000 customers D. 15,000 customers
By calculating an appropriate number of terms, determine if the series converges or diverges. If it converges, find the limit L and the smallest integer N such that 
for 
otherwise indicate divergence.an = n cos 
A. L = 0, N = 37 B. L = 1, N = 28 C. L = 0, N = 28 D. diverges
Graph the function. State the domain and range.y = -2x2 + 20x - 55
A. 
Domain: ? Range: y ? - 5
B. 
Domain: ? Range: y ? - 5
C. 
Domain: ? Range: y ? - 5
D. 
Domain: ? Range: y ? - 5
Solve the problem.The population of Belson has had an increase of 
in the last 50 years. During this same period, the population in Shelton has had an increase of 
. Which city has had a higher rate of population growth?
A. 
in Shelton is greater.
B. 
in Belson is greater.
C. 
in Shelton is greater.
D. 
in Belson is greater.