The fraction F of the surface of Earth that is visible from an altitude of h kilometers above the surface is given by
.
A. Make a graph of F versus h. Include altitudes up to 100,000 kilometers.B. What fraction of Earth's surface is visible from 1220.00 kilometers above Earth's surface? Report your answer both as a decimal (rounded to two places) and as a percentage of Earth's surface.C. Use your graph to determine the largest fraction of Earth's surface that is visible no matter what the altitude.
What will be an ideal response?
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B. The fraction is 0.08. This is equivalent to 8% of Earth's surface.
?
C. 0.5 or 50%.
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A fish population grows according to the logistic model
.
Here t is measured in years and N is measured in thousands of tons.A: Make a graph of the fish population over the first 20 years.B: According to the model, what is the carrying capacity for this fish population in this environment?C: According to the model, what is the optimum yield level for harvesting the fish?D: How long does it take for the fish population to grow from the optimum yield level to 90% of carrying capacity?
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Round your answers to two decimal places, if necessary.
What will be an ideal response?
Solve the problem.A size 12 dress in Country C is size 64 in Country D. A function that converts dress sizes in Country C to those in Country D is 
Find the inverse function.
A. f-1(x) = x - 20
B. f-1(x) = 
+ 20
C. f-1(x) = 
- 20
D. f-1(x) = 
Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.x2 + y - 36 = 0
A. origin B. x-axis C. y-axis D. x-axis, y-axis, origin E. none
Answer the question.True or False: The graph of the equation 9x - 15y = 30 goes through 
A. False B. True