Solve the problem.A satellite is to be put into an elliptical orbit around a moon. The moon is a sphere with radius of 68 km. Determine an equation for the ellipse if the distance of the satellite from the surface of the moon varies from 208 km to 765 km.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
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Solve.
x = 
- 
A. 
B. - 
C. 
D. - 
Express the radical in simplified form. Assume that all variables represent positive real numbers.
A. 2y7
B. y7 - 2
C. 
D. 
Solve the problem.Suppose that the population of a certain city during a certain time period can be modeled with the function, P(x) = -0.1x5 + 3.2x4 + 5000, where x is time in years since 1960. By sketching a graph of P(x), estimate during what time period the population of the city was increasing.
A. Between 1960 and 1986 B. Between 1960 and 1973 C. Between 1965 and 1986 D. Between 1986 and 1992
Solve the problem.A rectangular Persian carpet has a perimeter of 188 inches. The length of the carpet is 30 inches more than the width. What are the dimensions of the carpet?
A. 64 in., 94 in. B. 32 in., 62 in. C. 62 in., 92 in. D. 79 in., 109 in.