Combine like terms.9.9a + 8.5b - 4.2a - 4.9b
A. 5.7a + 13.4b
B. 14.1a + 13.4b
C. -5.7a + 3.6b
D. 5.7a + 3.6b
Answer: D
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Solve the inequality 
. Round your answer to two decimal places.
?
A. ?
B. 
C. ?
D. ?
Determine the domain and range of the function.{(1, -2), (4, -5), (-5, -3), (5, 1)}
A. Domain: {-2, -5, -3, 1}; range: {1, 4, -5, 5} B. Domain: {1, 4, 7, 5}; range: {-2, -5, -3, 7} C. Domain: {1, 4, -5, 5}; range: {-2, -5, -3, 1} D. Domain: {1, 0, -5, 5}; range: {-2, -5, 0, 1}
Solve the problem.A bird flies from its nest 2 km in the direction 1° north of east, where it stops to rest on a tree. It then flies 5 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. (-4.993, -0.2617) B. (2.000, 0.03490) C. (-2.993, -0.2268) D. (6.031, -1.019)
Find an equation for the ellipse described.Foci at (0, ±4); y-intercepts are ±7
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1