Decide whether the given set of numbers is a group under the given operation.Whole numbers; multiplication
A. Yes
B. No
Answer: B
Mathematics
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Determine the limit by sketching an appropriate graph. 
A. 4 B. -0 C. Does not exist D. -12
Mathematics
Determine whether the form represents a valid argument.r q ? ~r ~r ? p p
A. Invalid B. Valid
Mathematics
Solve the problem. If the base of the log is not specified, assume that it is 10.The height (in meters) of a female member of a certain tribe of a given age is approximated by 
where t is age (in years) and 
Estimate the height (to the nearest hundredth) of a female member of the tribe who is 4 years old.
A. 0.77 m B. 1.12 m C. 0.96 m D. 0.52 m
Mathematics
Perform the indicated operations.7 - (-15 - [-11 - (-11 + 7)])
A. 51 B. 15 C. 37 D. 29
Mathematics