Multiply to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.2
? 
A. 1
B. 
C. 2
D. 
Answer: B
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Find all values of x in the interval [0°, 360°) that satisfy the equation. Round approximate answers to the nearest tenth of a degree.cos2x + cos x - 1 = 0
A. {103.2°, 145.2°, 283.2°, 325.2°} B. {51.8°, 308.2°} C. {49.8°, 130.2°, 229.8°, 310.2°} D. {70.5°, 109.5°, 180°}
Find the center and radius of the the circle.x2 + y2 - 14x - 10y + 74 = 16
A. Center: (5, 7); Radius: 4 B. Center: (7, 5); Radius: 4 C. Center: (-5, -7); Radius: 16 D. (Center: -7, -5); Radius: 16
Solve the problem.Find the range and the standard deviation of the following prices of backpacks: 
$10.45, $10.86, $11.99.
A. Range = $8.14; standard deviation = $2.08 B. Range = $8.14; standard deviation = $2.62 C. Range = $6.99; standard deviation = $2.43 D. Range = $6.99; standard deviation = $2.08
Find the due date and proceeds. Round to the nearest cent.
A. August 30; $4972.50 B. August 30; $5227.50 C. August 28; $5227.50 D. August 28; $4972.50