Solve the problem.In 1980, the population of a city was 6.8 million. By 1992 the population had grown to 9.5 million. Find the average rate of change in population from 1980 to 1992..
A. 
million per year
B. 
million per year
C. 
million per year
D. 
million per year
Answer: B
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Solve the problem.Water is poured into a empty funnel like barrel at a steady constant rate. The diameter of the barrel is 12 inches on the bottom and 24 inches at the top. The height h of the water h is a function of 
What can you say about 
?
A. 
> 0
B. 
= 0
C. 
= k, k is a constant
D. 
< 0
Solve the variation 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 
style="vertical-align: -4.0px;" /> above the earth at a velocity of 
Use 
as the radius of the earth, and round your answer to the nearest hundredth of an hour.
A. 9.04 hours
B. 1.38 hours
C. 63.25 hours
D. 6.33 hours
Simplify the expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.
? 
A. 
B. 
C. 
D. 
Solve the problem.A bakery sold 57 pies for $2.37 each. What was the total amount of the sale?
A. $135.19 B. $135.10 C. $135.09 D. $136.19