Solve the inequality.x3 + 2x2 - 8x > 0
A. (-4, 0) or (2, ?)
B. (-2, 0) or (4, ?)
C. (-?,-4) or (0, 2)
D. (-4, ?)
Answer: A
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 
B. 
C. 
D. 
Find the Social Security tax for the current pay period. Assume a 6.2% FICA rate up to a maximum of $115,000.Gross Earnings This Year: $108,592.25Current Period Earnings: $4,442.60
A. $397.28 B. $285.44 C. $13,587.28 D. $275.44
Integrate using any method.
Secret messages can be encoded by using a code and an encoding matrix. If we have the code:
and an encoding matrix E, we can encode a message by taking every two letters of the message, converting them to their corresponding numbers, creating a 2 × 1 matrix, and then multiplying each two numbers by E. The message may be unscrambled with a decoding matrix which is the inverse of the coding matrix, E-1. Determine if the given pair of encoding matrices are inverses of each
other.
and 
What will be an ideal response?