Multiply.(-2y + 1)(-4y2 - y + 9)
A. 8y3 - 2y2 - 19y + 9
B. 8y3 - 19y + 9
C. -2y2 - 19y + 9
D. 8y3 - 6y2 - 19y + 9
Answer: A
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Solve the problem.A window washer accidentally drops a bucket from the top of a 144-foot building. Solve the equation 
to find the time t (in seconds) at which the bucket will the bucket hit the ground.
A. 48 sec B. -3 sec C. 3 sec D. 9 sec
Solve.At Allied Electronics, production has begun on the X-15 Computer Chip. The total cost function is given by 
and the total profit function is given by 
where x represents the number of boxes of computer chips produced. The total revenue function, R(x), is such that 
Find R(x).
A. R(x) = 43x - 0.3x2 B. R(x) = 41x + 0.3x2 C. R(x) = 40x - 0.6x2 D. R(x) = 41x - 0.3x2
Find the equation of the graph.
A. y = -6.5 B. x = -6.5 C. x = 6.5 D. y = 6.5
Provide an appropriate response.The salaries at a small company are src="https://sciemce.com/media/4/ppg__10622191624__f1q91g7.jpg" alt="" style="vertical-align: -4.0px;" />, 
, 
, 
, 
, 
, 
, 
, 
, and 
. Which measure of central tendency is best to describe the salaries?
A. Weighted mean
B. Mode
C. Mean
D. Median