Determine whether the statement is a self-contradiction, an implication, a tautology (that is not also an implication), or none of these.p ? (q ? p)
A. Implication
B. Tautology
C. Self-contradiction
D. None of these
Answer: A
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Multiply.y ? (-y5)
A. -y6 B. -2y5 C. -2y6 D. -y5
Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.(x3 + 7xy - 5y2) - (9x3 + 5xy + y2)
A. -8x3 + 2xy - 6y2 B. 8x3 - 2xy - 4y2 C. 10x3 + 2xy - 6y2 D. -8x3 + 2xy - 4y2
Solve the problem.The value of a particular investment follows a pattern of exponential growth. In the year 2000, you invested money in a money market account. The value of your investment t years after 2000 is given by the exponential growth model A = 6200e0.063t. When will the account be worth $7490?
A. 2005 B. 2003 C. 2002 D. 2004
Solve the problem.The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by 
where x is the number of videos rented daily. Find the lowest cost to the nearest dollar.
A. $534 B. $828 C. $632 D. $338