Solve the problem.The price P of a certain computer system decreases immediately after its introduction and then increases. If the price P is estimated by the formula 
where t is the time in months from its introduction, find the time until the minimum price is reached.
A. 9.1 months
B. 36.4 months
C. 18.2 months
D. 10 months
Answer: A
Mathematics
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Provide an appropriate response.A student tries to solve 
= 
+ 10 by squaring both sides and gets 
Why is this not correct?
What will be an ideal response?
Mathematics
Choose the number that is a solution of the inequality.8n + 12 ? 7n + 6
A. -3 B. -6 C. -4 D. -5
Mathematics
Determine whether the improper integral is convergent or divergent.
A. Divergent B. Convergent
Mathematics
An arched doorway is formed by placing a circular arc on top of a rectangle (see the figure). If the doorway is w = 6 feet wide and the height of the arc above its ends is 1 foot, what is the radius of the circle containing the arc? [Hint: Note that (3, r -1) must satisfy x² + y² = r².]
 figure 1.png)
Mathematics