Find the inverse of the one-to-one function.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: D
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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
Determine whether the given linear equations are parallel, perpendicular, or neither.y = -7x - 3y = -7x + 3
A. parallel B. perpendicular C. neither
Find the ordered pair for the y-intercept of the graph of the quadratic equation.y = x2 - 2x - 8
A. (0, -2) B. (4, 0) C. (0, -8) D. (-2, 0)
Solve for x. Check your answer. If there is no solution, say so.
= 
A. x = 28.8 B. x = 288 C. x = 2.88 D. x = 57.6