Find the largest open interval where the function is changing as requested.Increasing f(x) = 
x2 - 
x
A. (-?, -1)
B. (1, ?)
C. (-1, 1)
D. (-?, ?)
Answer: B
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Factor completely.
What will be an ideal response?
Find the slope then describe what it means in terms of the rate of change of the dependent variable per unit change in the independent variable.The linear function f(x) = -8.8x + 32 models the percentage of people, f(x), who eat at fast food restaurants each week x years after 1998.
A. m = 8.8; the percentage of people eating at fast food restaurants each week has increased at a rate of -8.8% per year after 1998. B. m = 32; the percentage of people eating at fast food restaurants each week has increased at a rate of -8.8% per year after 1998. C. m = -8.8; the percentage of people eating at fast food restaurants each week has decreased at a rate of -8.8% per year after 1998. D. m = 8.8; the percentage of people eating at fast food restaurants each week has increased at a rate of 8.8% per year after 1998.
Factor, if possible.7x2 - 60x - 27
A. (3x + 7)(x - 9) B. (7x - 3)(x + 9) C. (7x - 7)(x - 9) D. (7x + 3)(x - 9)
Identify a, b, c, with a > 0, for the quadratic equation.x2 = (x - 6)2
A. a = 1, b = -12, c = 36 B. a = 0, b = -12, c = 36 C. a = 2, b = -12, c = 36 D. Not quadratic.