Solve the linear equation.x + 15 + 2x = -5 - 2x - 25
A. -9
B. -3
C. 3
D. 9
Answer: A
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For a certain population the growth rate G, measured in thousands per year, depends on the population n, measured in thousands. The relationship is
.
?
A: Make a graph of G versus t. Include populations of up to 120,000 (corresponding to 
).B: Explain what is happening to the population at 
thousand and at 
thousand.C: Over what population ranges is G negative?D: Explain in practical terms what is happening to the population over the population ranges you found in part C.
What will be an ideal response?
Find the real solutions, if any, of the equation. Use the quadratic formula.x2 - 8x - 15 = 0
A. {4 + 
, 4 - 
}
B. {-4 + 
, -4 - 
}
C. {8 + 
, 8 - 
}
D. {4 + 
, 4 - 
}
Provide an appropriate response.A shipment of 20 digital cameras contains two that are defective. A random sample of three is selected and tested. Let X be the random variable associated with the number of defective cameras in a sample. Find the probability distribution of X and the expected number of defective cameras in a sample.
What will be an ideal response?
Solve the equation in the real number system.2x4 - 15x3 + 45x2 - 45x + 13 = 0
A. 
B. 
C. 
D. 