Simplify the expression.
A. 1
B. 
C. 
D. 1 - x2
Answer: B
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Identify the problem with the method used to obtain a random sample.Kate is researching drug use amongst U.S. adults and would like to obtain a random sample of U.S. adults. She obtains an alphabetical list of all students at her university. There are 12,906 names on the list. She uses a random number generator to generate 200 numbers between 1 and 12,906. She chooses the names corresponding to those 200 numbers.
A. The sample will be biased because the random number generator might choose the same number more than once. B. The sample will be biased because the random number generator will only choose numbers between 1 and 10,000. Students corresponding to higher numbers cannot be selected. C. The sample will be biased because students at her university are not representative of all U.S. adults.
The supply equation for a certain brand of radio is given by 
, where x is the quantity supplied and p is the unit price in dollars. Use differentials to approximate the change in price when the quantity supplied is increased from 10,000 units to 10,500 units.
?
$__________
Fill in the blank(s) with the appropriate word(s).
Multiply, then simplify the product. Assume that all variables represent positive real numbers.(
+ 1)(
- 1)
A. 12
B. 12 + 2
C. 12 - 2
D. 14
The graph of a function f is given. Use the graph to answer the question.For what numbers x is f(x) > 0?
A. [-100, -60), (70, 100) B. (-? -60) C. (-60, ?) D. (-60, 70)