Write the answer to the problem as an algebraic expression.Bill is q years old. How old will he be in 9 years? How old was he 8 years ago?
A. q + 8; q - 9
B. q + 9; 8 - 3;
C. q + 9; q - 8
D. q9; 3 - 8
Answer: C
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The following table shows the average rice yield Y, in tons per hectare, on Asian farms t years after 1980. Explain in practical terms the meaning of the slope of the regression equation. t 5 10 20 25Y 3.35 3.66 3.95 4.14? ?
A. Each year yield decreases by an average of 0.04 tons per hectare. B. Each year yield increases by an average of 0.04 tons per hectare. C. Each year yield increases by an average of 0.52 tons per hectare. D. Each year yield decreases by an average of 0.52 tons per hectare.
Establish the identity.1 - 
= - sin u
What will be an ideal response?
Use a sum-to-product identity to rewrite the expression.sin 
- sin 
A. 2sin 
cos 
B. 2cos 
sin 
C. 2cos 
cos 
D. 2sin 
sin 
Perform the indicated operations.-2(3 - 6)
A. -6 B. -18 C. 6 D. -12