Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Answer: A
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Find the volume of the indicated region.The region that lies under the plane 
and over the triangle bounded by the lines 
, 
, and 
A. 98 B. 80 C. 112 D. 94
In 1965 the economist F.M. Scherer modeled the number, n, of patens produced by a firm as a function of the size, s, of the firm (measured in annual sales in millions of dollars). He came up with the following equation based on a study of 448 large firms. Round your answer to two decimal places.
?
?
Find 
.
?
A. -12.3
B. -14.3
C. 31.46
D. -17.3
E. -9.3
Find the intercepts for the graph of the equation given: .
a. The -intercept is (5, 0), and the -intercept is (0, 16). b. The x-intercept is (2, 0), and the -intercept is (0, 9). c. The -intercept is (7, 0), and the -intercept is (0, 12). d. The -intercept is (6, 0), and the -intercept is (0,-21).
Find the slope and the y-intercept of the given line.y = 
x - 6
A. - 
; (0, -6)
B. 
; (0, -6)
C. - 
; (0, 6)
D. 
; (0, 6)