Perform the indicated operation, where possible.
- 
A. 
B. 
C. 
D. Not possible
Answer: D
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Multiply and express the product in lowest terms.
? 
A. 
B. 
C. 
D. 
Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = 2x2 + x + 3 from x = -2 to x = 1; n = 3
A. 17 B. 21 C. 25 D. 13
Solve the problem.The speed of a vehicle is inversely proportional to the time it takes to travel a fixed distance. If a vehicle travels a fixed distance at 10 miles per hour in 45 minutes, how fast must it travel to cover the same distance in 15 minutes?
A. 30 miles per hour
B. 
miles per hour
C. 
miles per hour
D. 
miles per hour
Solve triangle ABC. Round side lengths and angle measures to the nearest tenth when necessary.a = 20, b = 35, c = 42
A. A ? 56°, B ? 28.3°, C ? 95.7° B. A ? 28.3°, B ? 56°, C ? 95.7° C. No triangle exists. D. A ? 28.3°, B ? 28°, C ? 123.7°