Find the first term a1 and the common difference d of the arithmetic sequence.-3, 3, 9, 15, 21, . . .
A. a1 = 6, d = 9
B. a1 = -3, d = -3
C. a1 = -3, d = 6
D. a1 = 6, d = -6
Answer: C
Mathematics
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Provide an appropriate response.Give one number between -8 and 8 that is a negative real number but not an integer.
A. 7.009 B. -7.009 C. Not possible D. 3
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Write the series using summation notation.1 + 
+ 
+ 
+ 
+ 
A. 
B. 
C. 
D. 
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