Provide an appropriate response.Determine whether the sequence is arithmetic, geometric, or neither. If the sequence is geometric, find the common ratio r. If the sequence is arithmetic, find the common difference d.7, 4, 1, -2, -5, ...
A. arithmetic, d = 3
B. neither
C. geometric, r = -3
D. arithmetic, d = -3
Answer: D
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. (2-2)0
A. 1
B. 
C. 0
D. -4
Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.8 cos2 x
A. 16 cos x B. 1 + cos 2x C. 4 - 4 cos 2x D. 4 + 4 cos 2x
Evaluate the algebraic expression under the given conditions.-5x2 - 9x + 9 for x = -2
A. -3 B. 3 C. 37 D. 7
To further justify the Cofunction Theorem, use your calculator to find a value for each pair of trigonometric functions below. In each case, the trigonometric functions are cofunctions of one another, and the angles are complementary angles. Round your answers to four places past the decimal point. ? sin 23°, cos 67° ?
A. sin 23° = 0.3907, cos 67° = -0.9205 B. sin 23° = -0.3907, cos 67° = 0.9205 C. sin 23° = 0.3977, cos 67° = 0.9135 D. sin 23° = 0.3907, cos 67° = 0.3907 E. sin 23° = 0.3857, cos 67° = 0.9205