Provide an appropriate response.It can be shown that a hyperbola with center at the origin, foci at F'(-c, 0) and F(c, 0), and equation 
has equation 
. Use this result to find an equation of a hyperbola with center at the origin, foci at (-4, 0) and (4, 0), and absolute value of the distances from any point of the hyperbola to the two foci equal to 4.
A. 
- 
= 1
B. x2 - y2 = 4
C. 
- 
= 1
D. 
- 
= 1
Answer: C
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Find the absolute value of the complex number.z = -2i
A. 4 B. 2i C. -2 D. 2
Solve.logx81 = 2
A. x = 
B. x = -9
C. x = 9
D. x = -2
Solve.A company that manufactures outdoor rocking chairs makes a daily profit p according to the equation 
where p is measured in dollars and x is the number of rocking chairs made per day. Find the number of rocking chairs that must be made each day to produce a zero profit for the company. Round your answer to the nearest whole number.
A. 2043 rocking chairs or 2657 rocking chairs per day B. 25 rocking chairs per day C. 44 rocking chairs or 50 rocking chairs per day D. 19 rocking chairs or 25 rocking chairs per day
Solve the problem.If a rocket is propelled upward from ground level, its height in meters after t seconds is given by 
During what interval of time will the rocket be higher than 274.4 m?
A. 0 < t < 4 B. 7 < t < 8 C. 8 < t < 11 D. 4 < t < 7