a) The next three terms are -9, -11, and -13
b) This is an arithmetic sequence
c) An arithmetic sequence is when the difference between one term and the next remains constant
d) We can make the equation y=-2x+1 where x is the term number, then we plug in 27 for x and solve for y
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Length - 12
Width - 7
38 = 2((5+x) + x)
38 = 10 +4x
The square roots of 144 are 12 and -12 which are rational numbers.