Write the expression in the standard form a + bi.
A. 
+ 
i
B. - 
+ 
i
C. - 
+ 
i
D. 
+ 
i
Answer: A
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Solve the problem.The kinetic energy K of an object with mass m and velocity v is 
How is dm/dt related to dv/dt if K is constant?
A. 
= - 
B. 
= - 2mv3
C. 
= 
D. 
= - 
Solve the inequality.Behemoth Back Packs, Inc., finds that the cost to make x back packs is 
while the revenue produced from them is 
(C and R are in dollars). What is the smallest whole number of back packs, x, that must be sold for the company to show a profit?
A. 179,634 B. 1,248,884 C. 15 D. 102
Solve the problem.A square box with an open top is to be constructed from a rectangular piece of cardboard with side length 4 inches by cutting out equal squares of side length x at each corner and then folding up the sides. Write a completely factored polynomial whose values give the surface area of the box.
A. 4(2 + x)2 B. 4(2 - x)2 C. 8x(2 - x) D. 8x(2 + x)
Perform the indicated operations and express your answer in the form a + bi. 
A. -5i B. 5 C. -5 D. 5i