Complete the identity.sin4 x - cos4 x = ?
A. 1 - 2cos2 x
B. 1 - 2sin2 x
C. 1 + 2cos2 x
D. 1 + 2sin2 x
Answer: A
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Sketch the graph of a function y = f(x) that satisfies the given conditions.f(0) = 0, f(1) = 4, f(-1) = -4, 
f(x) = -3, 
f(x) = 3.
What will be an ideal response?
Use a graphing utility to graph the function over the indicated interval and approximate any local maxima and local minima. Determine where the function is increasing and where it is decreasing. If necessary, round answers to two decimal places.f(x) = 0.15x4 + 0.3x3 - 0.8x2 + 5; (-4, 2)
What will be an ideal response?
Solve the problem.A restaurant serves 8 ounces of soup to each customer. How many quarts of soup should be prepared in order to serve 59 customers?
A. 16
qt
B. 29
qt
C. 15
qt
D. 14
qt
The graphing calculator screen shows the graphs of the two given functions, and the display gives the coordinates of one of the solutions. Find the other solution.
y = 
x2x - y = -4
A. (-2, -2) B. (-2, 2) C. (2, 2) D. (2, -2)