Find the determinant of 
by the method of expansion by cofactors using row 2.
?
A. 14
B. -14
C. 24
D. 34
E. 4
Answer: A
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Express the set in the simplest interval form.(-?, 2) ? (-2, ?)
A. (-2, 2) B. [-2, 2) C. (-?, -2] D. (-?, ?)
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
Express the graph shown using interval notation. Also express it as an inequality involving x.
A. [9, ?) x ? 9 B. (9, ?) x > 9 C. (-?, 9) x < 9 D. (-?, 9] x ? 9
Solve the equation by expressing each side as a power of the same base and then equating exponents. 
x = 
A. {-2}
B. 
C. 
D. {2}