The amount L, in liters, of liquid remaining in a tank after t hours satisfies the equation of change 
. What is happening to the liquid in the tank when there are 31 liters present?
?
A. The amount of liquid is at a minimum.
B. The amount of liquid in increasing.
C. The amount of liquid is deceasing.
D. The amount of liquid is at a maximum.
Answer: C
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Evaluate. The differential is exact.
A. 0 B. 5e45 + 33 C. 5e45 + 32 D. 5e45 + 12
Simplify the radical expression by factoring out the largest perfect nth power. Assume that all variables are positive.
A. 2 + 
B. Not a real number
C. 2
D. 2
Tell how many roots the following equation has.
?
Fill in the blank(s) with the appropriate word(s).
Solve the problem.If friction is ignored, the time t (in seconds) required for a block to slide down an inclined plane is given by the formula t = 
where a is the length (in feet) of the base and g ? 32 feet per second per second is the acceleration of gravity. How long does it take a block to slide down an inclined plane with base a = 12 when 
If necessary, round the answer to the nearest tenth of a second.
A. 1.6 sec B. 2.2 sec C. 0.4 sec D. 1.3 sec