Solve the problem.A hot dog stand sells hot dogs with cheese, relish, chili, tomato, onion, mustard, or ketchup. How many different hot dogs can be concocted using any 4 of the extras?
A. 420
B. 840
C. 210
D. 35
Answer: D
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Use the addition formulas to derive the identity.cos 
= -sin x
What will be an ideal response?
Josiah paints with watercolors on a sheet of paper 28 inches wide by 16 inches high. He then places this sheet on a mat so that a uniformly wide strip of the mat shows all around the picture. The perimeter of the mat is 112 inches. How wide is the strip of the mat showing around the picture?
 figure 1.png)
(a) 2 inches
(b) 8 inches
(c) 3 inches
(d) 6 inches
(e) 4 inches
Evaluate the double integral over the given region.
R: 0 ? x ? 1, 0 ? y ? 2
A. 
B. 
C. 
D. - 
Use synthetic division to decide whether the given number is a solution of the given equation.x4 - 3x2 - 4; x = -2
A. Yes B. No