Evaluate the expression x + y for the given values of the variables.x = -3, y = -12
A. 9
B. 15
C. -15
D. -9
Answer: C
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Provide the proper response.True or false? 
Fill in the blank(s) with the appropriate word(s).
Simplify the expression. Assume that all variables are positive when they appear.
A. -20
B. - 
C. -9
D. - 
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.tan ? = 
, ? < ? < 
Find cos 
.
A. - 
B. 
C. - 
D. 
Solve the problem.For the period 2011 - 2017, if M is the average math SAT score (in points) for a certain year, then the average verbal SAT score (in points) for that year is approximately 
where t is the number of years since 2011. The average math SAT score was 485 points in 2014. Estimate the average verbal SAT score in2014.
A. 499 points B. 494 points C. 509 points D. 504 points