Use a sum-to-product identity to rewrite the expression.cos (8t2) - cos (5t2)
A. -2cos (6.5t2) sin (1.5t2)
B. -2sin (6.5t2) cos (1.5t2)
C. -2sin (6.5t2) sin (1.5t2)
D. -2cos (6.5t2) cos (1.5t2)
Answer: C
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Solve the problem.The inequality |T - 9| ? 17 describes the range of monthly average temperatures T in degrees Fahrenheit at a City X. (i) Solve the inequality. (ii) If the high and low monthly average temperatures satisfy equality, interpret the inequality.
A. 26 ? T ? 43; The monthly averages are always within 
B. -16 ? T ? 34; The monthly averages are always within 
C. -8 ? T ? 26; The monthly averages are always within 
D. 34 ? T ? 59; The monthly averages are always within 
Write interval notation for the graph.
A. (2, 6) B. [2, 6) C. [2, 6] D. (2, 6]
Provide the proper response.Which one of the following would be an appropriate choice for multiplying the numerator and the denominator of 
in order to rationalize the denominator?
A. 
B. 
C. 
D. 
Determine if the type of relation is linear, nonlinear, or none.
A. none B. nonlinear C. linear