Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. - 
C. - 
D. 
Answer: C
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Solve the problem.The distance an object is from the ground after being tossed from a hot air balloon 770 feet in the air is a function of time and given by 
where h is height in feet and t is the number of seconds the object has been in the air. Find h(5.5) and explain its meaning.
A. 314.33 feet; After the object has been in the air 5.5 seconds, it is 314.33 feet above the ground. B. 712.80 feet; After the object has been in the air 712.80 seconds, it is 5.5 feet above the ground. C. 251.63 feet; After the object has been in the air 5.5 seconds, it is 251.63 feet above the ground. D. 712.80 feet; After the object has been in the air 5.5 seconds, it is 314.33 feet above the ground.
Let 
, 
.
?
Perform the operation: 
.
?
A. 
?
B. 
?
C. 
?
D. 
?
E. none of these?
Find the nth term an of the geometric sequence.4, 
, 
, 
, . . .
A. an = 
n-1
B. an = (4)
n
C. an = (4)
n-1
D. an = (4)
n-1
Solve.The volume V of a gas varies inversely as the pressure P on it. The volume of a gas is 
under a pressure of 
What will be its volume under a pressure of 30 kg/cm2?
A. 132 cm3 B. 221 cm3 C. 245 cm3 D. 145 cm3