Find the value of the expression.-|21|
A. -21
B. 21
C. 0
D. 42
Answer: A
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Provide an appropriate response.It can be shown that the inequalities -x ? x cos
? x hold for all values of x ? 0.Find 
x cos
if it exists.
A. 1 B. does not exist C. 0 D. 0.0007
Use the basic trigonometric identities and the given information to find the exact values of the remaining trigonometric functions.tan ? = - 
and sec ? < 0
A. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
B. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
C. sin ? = - 
cos ? = 
tan ? = - 
csc ? = 
sec ? = 
cot ? = - 
D. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
Solve the problem.The population size of a culture of bacteria quadruples every day such that its size is modeled by the sequence 
where n is the number of the day just beginning. Find the size of the culture at the beginning of the third day and the size of the culture originally.
A. 1440 bacteria; 22
bacteria originally
B. 5760 bacteria; 90 bacteria originally
C. 1440 bacteria; 90 bacteria originally
D. 5760 bacteria; 360 bacteria originally
Provide an appropriate response.The 
of a polynomial is the common factor with the greatest coefficient and highest degree.
A. common factor B. least common multiple C. greatest common factor D. term