Prove the identity.
= -4 (cos2 t + cos t)
What will be an ideal response?
Answers may vary. One possible solution is:
= 
= 
= 
= 
= 
= 
= -4 cos t (cos t + 1)
=
Mathematics
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The region 
is represented below. Find the area of this region to two decimal places.
a. 20.28
b. 17.89
c. 16.08
d. 15.89
e.15.87
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Evaluate by using scientific notation and the laws of exponents. Leave you answer in scientific notation.
A. 72 × 105 B. 72 × 10-5 C. 8 × 104 D. 8 × 10-4
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Identify the pattern and find the next three terms.
 figure 1.png)
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Write the percent statement as an expression.
A) 0.0315x
B) 3.25x
C) 0.00325x
D) 0.325x
E) 0.0325x
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