Solve the problem. Round to two decimal places if needed.A sector of a circle has an area of 57 square feet. Find the central angle (in radians) that forms the sector if the radius is 4 feet.
A. 912 radians
B. 456 radians
C. 7.13 radians
D. 3.56 radians
Answer: C
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Find the domain and range of the relation.{(9, -7), (5, -5), (0, 0), (5, 5), (9, 7)}
A. domain: (-?, ?), range: {-7, -5, 0, 5, 7} B. domain: {0, 5, 9}, range: {-7, -5, 0, 5, 7} C. domain: {-7, -5, 0, 5, 7}, range: {0, 5, 9} D. domain: (-?, ?), range: (-?, ?)
Perform the indicated operation and write the answer in the form 
where a and b are real numbers.5i(2 - 8i)
A. 10i + 40i2 B. 10i - 40i2 C. 40 + 10i D. 10i - 40
Let 
, 
. Find the rule for the function
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Find the perimeter of the figure.
A. 12x + 2 B. 5x + 2 C. 7x + 2 D. 12x