Expand, where i2 = -1.(4 + i)4
A. 353 + 272i
B. 272 + 353i
C. 161 + 240i
D. 240 + 353i
Answer: C
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Write a linear programming model, including the objective function and the set of constraints for the following problem. DO NOT SOLVE, but be sure to define all your variables. ? Brown Bros., Inc., is an investment company doing an analysis of the pension fund for a certain company. The fund has a maximum of $10 million to invest in two places: no more than $8 million in stocks yielding 12%, and at least $2 million in long-term bonds yielding 9%. The stock-to-bond investment ratio cannot be more than 2 to 1. How should Brown Bros. advise its client so that the investments yield the maximum yearly return? ? DENOTE: ? x = amount invested in stock (in millions of dollars) y = amount invested in bonds (in millions of dollars) ?
A. 
?
B.
?
C.
?
D.
?
E.
?
Solve.
A. (-6, 6), (-5, 10) B. (6, 5) C. (6, 54), (5, 50) D. (-6, 54), (-5, 50)
Determine whether the given point (x,y) is on the unit circle.
A. No B. Yes
Verify the identity.cos 
= -sin x
What will be an ideal response?