Solve.A particular substance decays in such a way that it loses half its weight each day. How much of the substance is left after 9 days if it starts out at 128 grams?
A. 4 grams
B. 
gram
C. 
gram
D. 2 grams
Answer: B
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For the given investment, assume that there is no opportunity for reinvestment of returns. Find the monthly return, annual return, or annual percentage return as indicated.
Find the annual percentage return.
A. 8.28% B. 295.02% C. 8.60% D. 6.9%
Evaluate using a scientific calculator. Round the answer to three decimal places.e1.7
A. 5.474 B. 4.621 C. 5.774 D. 4.231
Use DeMoivre's Theorem to write the expression in rectangular form.
3
A. 3 + 3i
B. 4
+ 4
i
C. 3
+ 3
i
D. 4 + 4i
For a test question, a mathematics teacher wants to find two constants a and b such that the test item "Simplify 
)" will have an answer of 
. What constants should the teacher use for a and b?
? a = __________ ? b = __________ What will be an ideal response?