In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.(- 
, - 
)Find sin t.
A. - 
B. - 
C. 
D. - 
Answer: A
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Solve. If an object is propelled upward from a height of 112 feet at an initial velocity of 96 feet per second, then its height h, in feet, after t seconds is given by the expression 
Factor the expression. After how many seconds will the object hit the ground?
A. -16(t - 1)(t - 7); 1 sec B. -16(t + 1)(t + 7); 7 sec C. -16(t - 1)(t + 7); 1 sec D. -16(t + 1)(t - 7); 7 sec
Find a parametrization for the line segment beginning at P1 and ending at P2.P1(0, 0, 0) and P2(3, 4, 5)
A. x = 3t, y = 4t, z = 5t B. x = 3t + 3, y = 4t + 4, z = 5t + 5 C. x = 3t - 3, y = 4t - 4, z = 5t - 5 D. x = -3t, y = -4t, z = -5t
Assume that the demand function for a certain commodity has the form
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where x is the quantity demanded, measured in units of a thousand, and p is the unit price in dollars. Suppose the quantity demanded is 4,000 (x = 4) when the unit price is $7.00 and 7,000 (x = 7) when the unit price is $4.00. Determine the demand equation.
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A. ?
B. 
C. 
D. 
E. 
Evaluate the expression for the given replacement values.x - (y + z) for x = 23, y = 6, z = 3
A. 32 B. 14 C. 21 D. 20