Divide and simplify.
A. - 
B. - 
C. - 
D. - 
Answer: B
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Solve the problem.The time in hours it takes a satellite to complete an orbit around the earth varies directly as the radius of the orbit (from the center of the earth) and inversely as the orbital velocity. If a satellite completes an orbit 
above the earth in 
at a velocity of 
how long would it take a satellite to complete an orbit if it is at 
/> above the earth at a velocity of 
(Use 
as the radius of the earth.)
A. 32.43 hr
B. 4.93 hr
C. 199.52 hr
D. 19.95 hr
Solve the problem.The population of a particular country was 25 million in 1982; in 1989, it was 37 million. The exponential growth function 
describes the population of this country t years after 1982. Use the fact that 7 years after 1982 the population increased by 12 million to find k to three decimal places.
A. 0.056 B. 0.976 C. 0.355 D. 0.066
Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y = (x - 4)(x - 4)
A. x-axis B. origin C. y-axis D. x-axis, y-axis, origin E. none
Use Cramer's rule to solve the system.-4x - 7y + 2z = -65-2x + 7y + 7z = 80 6x - 7y - 2z = -57
A. {(2, 9, 3)} B. {(2, -9, -3)} C. {(9, 3, 9)} D. {(3, 7, 3)}