Evaluate the function f at the indicated value.
{7x + 3, if x ? 02 - 7x, if 0 < x < 7x, if x ? 7
A. 59
B. 7
C. 8
D. -54
Answer: C
Mathematics
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Use the partial sum formula to find the partial sum of the given arithmetic sequence.Find the sum of the first four terms of the arithmetic sequence 2, 10, 18, . . .
A. 30 B. 40 C. 112 D. 56
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Perform the indicated operation and simplify.
+ 
+ 
A. 
B. None of these
C. 
D. 
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Determine whether the two pairs of numbers are proportional.24.5, 
and 36.75, 
A. No B. Yes
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