Determine if the given set of whole numbers is closed under addition.{2, 4, 6, 8, . . . }
A. Not closed
B. Closed
Answer: B
Mathematics
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Solve the problem.Given that 
= 
,evaluate 
.
A. 
B. 
C. 
D. 
Mathematics
For the given angle in standard position, designate the quadrant in which the terminal side lies.- 
rad
A. I B. II C. III D. IV
Mathematics
Find the exact value of the expression.sec 150°
A. - 
B. 
C. - 
D. 
Mathematics
Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No
Mathematics