Solve the three-part inequality. Write your answer in interval notation.2 < 2x + 4 ? 10
A. (-1, 3)
B. [-1, 3]
C. (-1, 3]
D. [-1, 3)
Answer: C
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Solve the problem.A wind-driven electric generator has a 27.7-ft-diameter propeller. Find the angular velocity in radians per second at which the tip of the propeller will reach the speed of 1043 ft/s.
A. 28,900 rad/s B. 12.0 rad/s C. 75.3 rad/s D. 37.7 rad/s
Simplify the difference quotients 
and 
for the following function. Rationalize the numerator when necessary.f(x) = 5x + 3
A. 5; 5x - 5a B. 5x - 5h; 5x - 5a C. 5h; 5a D. 5; 5
Write the whole number in words.4,200,091
A. Four million, twenty thousand, ninety-one B. Forty-two thousand, ninety-one C. Four million, two hundred thousand, ninety-one D. Four million, two hundred ninety-one
Solve the system using Gaussian elimination. 5x - 7y + 7z = -86-25x + 35y - 35z = 430 15x - 21y + 21z = -258
A. {(x, y, z) 
5x - 7y + 7z = -86}
B. {(-6, 2, -6)}
C. {(x, y, z) 
15x - 21y + 21z = -86}
D. ?