Solve the problem.Subtract (-20a4 + 16a2) from (7a4 - 3a2).
A. -13a4 + 13a2
B. 27a4 - 19a2
C. 8a6
D. 27a4 + 13a2
Answer: B
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Use the method of writing each premise in symbols in order to write a conclusion that yields a valid argument.If I get robbed, I will go to court.I got robbed.
A. I will get robbed in court. B. I will not get robbed in court. C. I will not go to court. D. I will go to court.
Find the indicated probability.In a poll of registered voters shortly before a mayoral election, people were asked which candidate they were planning to vote for. The results are shown in the table. 
Find the empirical probability that a randomly selected registered voter is planning to vote for Anderson. Round your answer to the nearest thousandth when necessary.
A. 250 B. 0.217 C. 0.138 D. 0.004
Solve the equation.
(10x - 20) = 
(8x - 4)
A. 1
B. -1
C. -6
D. 
Solve the problem.For what point(s) on the curve of y = -0.25x2 + 8x is the slope of a tangent line equal to 1?
A. (14, 63) B. (1, 7.75) C. (16, 64) D. (0, 0)