Write in simplified form and list all restrictions on the domain.f(x) = 
A. f(x) = 
, x ? -7, 0
B. f(x) = 
, x ? 0
C. f(x) = 
, x ? 0
D. f(x) = 
, x ? 7, 0
Answer: A
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Use De Morgan's law to write the negation for the statement.She is not older than 20 and he is older than 20.
A. She is older than 20 but he is not older than 20. B. It is not true that she is older than 20 or he is not older than 20. C. She is older than 20 or he is not older than 20. D. She is older than 20 or he is not younger than 20.
Find the perimeter of the shape.
A. 9
B. 42
C. 21
D. 13
+ 4
Solve the following system by any appropriate method. If there is no real number solution, so state.
- 
= 1x + y + 5 = 0
A. (-6, -1)
B. (- 2, - 3)
C. (- 
, - 
)
D. (3, - 8)
Solve the problem.Find the area of the work space for a robotic arm that can rotate between 41° and 166° and can change its length from 0.4 meters to 2.1 meters. Round to one decimal place.
A. 1.9 m2 B. 834.5 m2 C. 9.3 m2 D. 4.6 m2