Use the appropriate sum or difference identity to write the given expression as a function of x alone.cos 
A. -cos x
B. cos x
C. sin x
D. -sin x
Answer: D
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Use divisibility rules to determine whether the given number is divisible by 2, 3, 5, or any combination of these.680,430
A. 2 B. 2, 5 C. 5 D. 2, 3, 5
Calculate the simple interest and the final balance. Round to the nearest cent, if necessary.
A. Interest: $165.00; Final Balance: $440.00 B. Interest: $125.00; Final Balance: $400.00 C. Interest: $154.50; Final Balance: $429.50 D. Interest: $145.00; Final Balance: $420.00
Identify the maximum and minimum values of the function in the interval [-2?, 2?]. Use your understanding of transformations, not your graphing calculator.y = -cos 8x
A. Maximum value = 8; minimum value = -8
B. Maximum value = 
; minimum value = - 
C. Maximum value = 1; minimum value = -1
D. Maximum value = 1; minimum value = 0
Find the partial fraction decomposition for the rational expression.
A. 
+ 
B. - 
+ 
C. 
- 
D. 
+ 