Determine whether the argument is valid or invalid.Sam plays tennis or George is not a man. If George is not a man, then Betsy does not win the award. Betsy wins the award. Therefore, Sam does not play tennis.
A. Valid
B. Invalid
Answer: B
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Rewrite the given expression as a single logarithm. Assume that all variables are defined in such a way that variable expressions are positive and bases are positive numbers not equal to 1.logt 6 + logt s
A. logt 
B. logt 6 ? logt s
C. logt (6 + s)
D. logt 6s
Simplify by using the associative property of multiplication.3(
p2)
A. 
p2
B. 11p2
C. 
p2
D. 24p2
Find all the zeros of the polynomial function.P(x) = x3 + 7x2 + 19x + 13
A. 1, -3 + 
, -6 - 
B. -1, 2 + 3i, 2 - 3i
C. -1, -3 + 2i, -3 - 2i
D. -1, 2 + 
, 2 - 
Solve the problem.Suppose that in a memory experiment the rate of memorizing is given by 
where M'(t) is the memory rate, in words per minute. How many words are memorized in the first 
(from t = 0 to t = 20)?
A. 104 words B. 144 words C. 24 words D. 64 words