Determine the maximum number of turning points of f.f(x) = 9x8 - 4x7 - 2x - 3
A. 9
B. 8
C. 0
D. 7
Answer: D
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Solve the problem.The orbit of a planet around a sun is an ellipse with the sun at one focus. The aphelion of a planet is its greatest distance from the sun, its perihelion is its shortest distance, and its mean distance is the length of the semimajor axis of the elliptical orbit. If a planet has a perihelion of 397.4 million miles and a mean distance of 399 million miles, write an equation for the orbit of the planet around the sun.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
The point in a lunar orbit nearest the surface of the moon is called perilune and the point farthest from the surface is called apolune. The Apollo 11 spacecraft was placed in an elliptical lunar orbit with perilune altitude 106 km and apolune altitude 318 km (above the moon). Find an equation of this ellipse if the radius of the moon is 1728 km and the center of the moon is at one focus.
What will be an ideal response?
Multiply using the rules for special products.(13m - 10w)(13m + 10w)
A. 169m2 - 260mw - 100w2 B. 169m2 + 260mw - 100w2 C. 169m2 - 100w2 D. 13m2 - 10w2
After beginning antiseptic treatment, the number of bacteria in a population decreases at a rate of 20% per hour, that is, dN/dt = -0.20N, where N is the number of bacteria and t is the time, in hours.
(a) When t = 0 , there are 150,000 bacteria present. Find a function that satisfies this equation. (b) How many bacteria will remain after 6 hr?