Solve the problem.Two phone companies compete for customers in a city. Company 1 retains 3/4 of its customers and loses 1/4 of its customers to Company 2. Company 2 retains 5/6 of its customers and loses 1/6 to Company 1. If we represent the fraction of the market held last year by 
, where a is the number the that Company 1 had last year and b is the number that Company 2 had last year, then the number that each company will have this year can be found by the following matrix equation. 
= 
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If Company 1 has A = 81,000 customers and Company 2 has B = 153,000 customers this year, then how many customers did Company 2 have last year?
A. 76,000 customers
B. 168,000 customers
C. 72,000 customers
D. 162,000 customers
Answer: D
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Determine whether the sequence converges or diverges, and, if it converges, find 
an.an = n - 
A. 0
B. 
C. 
D. Diverges
Identify equilibrium values and determine which are stable and which are unstable.
= y2 - 25
A. y = 5 is a stable equilibrium value and y = -5 is an unstable equilibrium. B. y = -5 and y = 5 are stable equilibrium values. C. y = -5 is a stable equilibrium value and y = 5 is an unstable equilibrium. D. There are no equilibrium values.
Determine whether the number is abundant or deficient.95
A. Abundant B. Deficient
Determine if the series converges absolutely, converges, or diverges.
A. converges conditionally B. diverges C. converges absolutely