Solve.logx 81 = 4
A. 3
B. 4
C. 3 or -3
D. 4 or -4
Answer: A
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Solve the problem.A bird flies from its nest 4 km in the direction 3° north of east, where it stops to rest on a tree. It then flies 7 km in the direction 3° south of west and lands atop a telephone pole. With an xy-coordinate system where the origin is the bird's nest, the x-axis points east, and the y-axis points north, at what point is the telephone pole located?
A. (-2.996, -0.1570) B. (3.995, 0.2093) C. (2.970, 7.494) D. (-6.990, -0.3664)
Find the general solution of the equation. Express the solution explicitly as a function of the independent variable.t-7y'(t) = 7
A. y = 
t-8 + C
B. y = 56t8 + C
C. y = 
t8 + C
D. y = 63t9 + C
Simplify the expressions. Make all exponents positive.(5x)2
A. 25x B. 10x2 C. 25x2 D. 10x
Find the exact value of the product.cos 45° cos 15°
A. 
- 
B. 
C. 
+ 
D. 
- 