Assume that the rate of change of the unit price of a commodity is proportional to the difference between the demand and the supply so that
?
?
where k is a constant of proportionality. Suppose that 
, 
, and 
. Find a formula for ?p?(?t).
What will be an ideal response?
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Find the limit.
ey2 sin-1
A. 0
B. 1
C. 
D. ?
Which statement is true about a 95% confidence interval for the mean?
a. There is a 95% chance the confidence interval includes the sample mean b. 95% of the data are included in the confidence interval c. A wider confidence interval means less confidence d. None of the above
Solve the problem.Within a group of n people, the number of possible handshakes, N, is given by N = 
(n2 - n). At a party, everybody shakes hands with every other person. If the total number of handshakes is 253, how many people are at the party?
A. 22 B. 23 C. 25 D. 24
Write the shaded area in the figure as a mixed number and as an improper fraction.
A. 4
; 
B. 4
; 
C. 3
; 
D. 3
; 