Solve the problem.The information in the chart gives the salary of a person for the stated years. Model the data with a linear function using the points 
and 
A. y = 29.1x + 23,500
B. y = 1200x + 23,500
C. y = 1200x
D. y = -1443x + 23,500
Answer: B
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Perform the matrix operation.Given A = 
and I = 
, find AI.
A. 
B. 
C. 
D. 
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. 20,000 customers B. The sum diverges to infinity. C. 15,000 customers D. 30,000 customers
Add or subtract as indicated.
+ 
A. 
B. 
C. 
D. 
Find the second derivative.y = 5x2 + 6x - 8
A. 5 B. 10 C. 10x + 6 D. 0