Solve.The table shows one family's utility bills for the first nine months of the year.
Find the range.
A. $519
B. $156
C. $536
D. $110
Answer: A
Mathematics
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Find the work done by F over the curve in the direction of increasing t.F = xyi + 8j + 2xk; C: r(t) = cos 4ti + sin 4tj + tk, 0 ? t ? 
A. W = 
B. W = 
C. W = 0
D. W = 
Mathematics
Perform the conversion. Round to the nearest hundredth when necessary.47 kg to lb
A. 103.40 lb B. 21.15 lb C. 119.38 lb D. 49.82 lb
Mathematics
Find the number or numbers.If -2 is added to a number and the sum is doubled, the result is 12 less than the number. Find the number.
A. -8 B. 14 C. 16 D. -16
Mathematics
Use a double-angle identity to find the exact value of the expression.
A. 
B. 
C. 
D. 
Mathematics