Find the double integral over the rectangular region R with the given boundaries.
R0 ? x ? 1, 1 ? y ? e
A. 
B. 2
C. 1
D. 
Answer: D
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Simplify the expression. Assume that all variables are positive when they appear.
- 
A. 2
- 4
B. 4
- 2
C. 6
D. 2 - 4
For the application, identify the common measure, the whole, the part, and the number of parts. Write the legend, set up and solve the equation.To make a batch of juice, 1
cups of concentrate are required. How many batches of juice can be made from 40 cups of concentrate?
A. 25 batches
B. 22
batches
C. 23 batches
D. 24 batches
Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range.y = -2x2 + 6x - 5
A. D: all real numbers; R: (y ? -0.5) B. D: (x ? 1.5), R: all real numbers C. D: (x ? 1.5), R: (y ? -5) D. D: all real numbers; R: (y ? -0.5)
Solve the system.2x + 8y + 6z = 115 x + 4y + 3z = -23 x + y + z = -5
A. (-3, -2, -5) B. (-5, -3, -2) C. (-5, -2, -3) D. No solution