Find the coordinates of the vertex of the quadratic function.f(x) = x2 - 10x - 2

A. (5, -27)
B. (-10, 198)
C. (5, -77)
D. (-5, 73)


Answer: A

Mathematics

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Suppose   is a linear function with slope 8. Find the equation of change for f. ?

A.
B.
C.
D.

Mathematics

Solve the problem.Does the graph of the function y = 6x + 3 sin x have any horizontal tangents in the interval  If so, where?

A. Yes, at x = , x = 
B. Yes, at x = , x = 
C. No
D. Yes, at x = 

Mathematics

Write the mixed number as an improper fraction.16

A.
B.
C.
D.

Mathematics

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.  = 

style="vertical-align: -15.0px;" />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. 162,000 customers
B. 72,000 customers
C. 168,000 customers
D. 76,000 customers

Mathematics