Perform the indicated operation and simplify.
- 
A. 
B. 
C. 
D. 
Answer: B
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Use a sum or difference identity to find the exact value.sin (-165°)
A. 
B. 
C. 
D. - 
Provide an appropriate response.Suppose that a state introduces a state income tax which will be at a flat rate 
The state legislature wishes to estimate how much money they will receive in taxes, and to do this they need to know the average income of residents of the state. Which information would be most useful, the mean income, the median income, or the mode of the incomes? Why?
What will be an ideal response?
Factor the expression completely.15x2 - 65x - 50
A. (15x + 10)(x - 5) B. (3x + 2)(5x - 25) C. 5(3x + 2)(x - 5) D. 5(3x - 2)(x + 5)
Set up the percent proportion, and write "unknown" for the value that is not given. Recall that the percent proportion is 
= 
. Do not try to solve for any unknowns.What is 126% of 10?
A. 
= 
B. 
= 
C. 
= 
D. 
= 