The proprietor of the Showplace, a video store, has estimated that the rental price p (in dollars) of prerecorded video discs is related to the quantity x rented/day by the demand equation 
. Currently, the rental price is $4/disc.
?
Is the demand elastic or inelastic at this rental price?
?
__________
?
If the rental price is increased, will the revenue increase or decrease?
?
__________
What will be an ideal response?
elastic; decrease
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Collect like terms and write in descending order.-4x9y10 + 6x9y10 - 5x9y10 + 8x9y10 + 8x9y10
A. 13x9y10 B. Can't be simplified C. 21x9y10 D. -3x9y10
Find the mode.The last seven computer games sold at the local electronics store cost $20, $36, $46, $36, $49, $36, $49.
A. The mode is $36. B. The mode is $38.90. C. The mode is $46. D. The mode is $49.
Provide an appropriate response.A student is solving the equation s2 = 102 and has determined that s = 10. He or she has looked up the answer in the back of the book and finds that s = -10 is also a solution. The student feels that this is a misprint. How would you advise him or her?
What will be an ideal response?
Find the inverse, if it exists, for the matrix.
A. 
B. 
C. 
D. The inverse does not exist.