Find the derivative.y = sin3 x - cos 3x
A. 3 sin2 x cos x + 3 sin 3x
B. 3 sin3 x cos x - 3 sin 3x
C. 9 sin2 x cos x sin 3x
D. 3 sin2 x + sin 3x
Answer: A
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Evaluate the expressing using a unit circle or state that the quantity is undefined. All angles are in radians.tan 
A. -1 B. 1 C. 0 D. Undefined
Use an identity to write the expression as a single trigonometric function or as a single number.
A. sin 22° B. cos 22° C. tan 22° D. cot 22°
Use dot mode to graph the function f in the standard viewing rectangle. Evaluate f for the given x-values.f(x) = [[x]] - 3 at x = -1.6 and x = 1.6
A. 
f(-1.6) = -4, f(1.6) = 0
B. 
f(-1.6) = -3, f(1.6) = -2
C. 
f(-1.6) = -6, f(1.6) = -4
D. 
f(-1.6) = -5, f(1.6) = -2
Imagine that a US-based firm wants to begin selling its products in Mexico. Which of the following resources or capabilities are necessary for the firm to succeed in entering the Mexican market?
A. Manufacturing capacity to produce sufficient quantity of its products B. Financial capital to support distribution in Mexico C. Capability to market and sell its products in a country outside the US D. All of these