Find the sum of the series.
A. 30
B. 5
C. 18
D. 13
Answer: C
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Evaluate the double integral over the given region.
R: 0 ? x ? 
, 0 ? y ? ?
A. 
B. 
C. 
D. ?
Solve the problem.A pipe is cut into two pieces, with one piece 20 feet longer than the other. The pipe was 56 feet long before it was cut. How long is each piece?
A. 38 feet, 18 feet B. 38 feet, 36 feet C. 56 feet, 36 feet D. 76 feet, 36 feet
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination. x - y + 2z = -73x + z = -3 x + 3y + z = 0
A. (-3, 0, 1) B. (-3, 1, 0) C. (0, 1, -3) D. No solution
Solve the problem.Softee Blankets charges $6 for shipping orders of $20 or less, $10 for orders from $20.01 to $70, and $15 for orders over $70. One week shipping charges for 510 orders totaled $5100. There were 30 more orders for $20 or less shipped than there were orders for over $70. Find the number of orders shipped at each rate.
A. $20 or less: 270; $20.01 to $70: 120; over $70: 120 B. $20 or less: 240; $20.01 to $70: 150; over $70: 120 C. $20 or less: 150; $20.01 to $70: 240; over $70: 120 D. The numbers cannot be determined from the given information.