Simplify the expression 
.
A. 
B. 
C. 
D. 
E. 
Answer: A
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Solve the inequality, and then express in interval notation.2 - 
> 
(x + 2)
A. x > - 1 ; 
B. x < 2 ; 
C. x > 4 ; 
D. x < 3 ; 
Determine whether y ? ? or y ? -? as x ? -? and x ? ?.y = -7x4 + 3x2 - 5
A. y ? -? as x ? -?; y ? ? as x ? ? B. y ? -? as x ? -?; y ? -? as x ? ? C. y ? ? as x ? -?; y ? -? as x ? ? D. y ? ? as x ? -?; y ? ? as x ? ?
Solve the problem.The formula D = 7e-0.04h can be used to find the number of milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. When the number of milligrams reaches 2, the drug is to be given again. What is the time between injections?
A. 17.33 hr B. 31.32 hr C. 48.65 hr D. 34.43 hr
Use the unit circle to find the value of the trigonometric function.sin 
A. 2
B. 
C. 
D. 