Write the equation of the graph after the indicated transformation(s). The graph of y = x2 is vertically stretched by a factor of 2, and the resulting graph is reflected across the x-axis.
A. y = (x - 2)2
B. y = 2x2
C. y = 2(x - 2)x2
D. y = -2x2
Answer: D
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The quantity demanded each month of the Walter Serkin recording of Beethoven's Moonlight Sonata, manufactured by Phonola Record Industries, is related to the price/compact disc.
?
The equation 
, where 
denotes the unit price in dollars and 
is the number of discs demanded, relates the demand to the price.
?
The total monthly cost (in dollars) for pressing and packaging x copies of this classical recording is given by 
.
?
To maximize its profits, how many copies should Phonola produce each month? Hint: The revenue is 
, and the profit is 
.
?
A. 
copies
B. 
copies
C. 
copies
D. 
copies
E. 
copies
Predict the general, or nth term, an, of the sequence.1, 7, 13, 19, 25, . . .
A. 6n + 5 B. 6n - 5 C. 8n - 5 D. 6n - 6
Evaluate.80
A. 8 B. 0 C. 1 D. -1
Solve the problem.What is 100% of 36
miles?
A. 136
miles
B. 100 miles
C. 36
miles
D. 3650 miles