Write the sentence with the fraction as a percent. If necessary, round the percentage to the nearest tenth.In December, 
of all commercial flights were delayed.
A. In December, 80% of all commercial flights were delayed.
B. In December, 25% of all commercial flights were delayed.
C. In December, 2.5% of all commercial flights were delayed.
D. In December, 31.3% of all commercial flights were delayed.
Answer: B
Mathematics
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Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function increases most rapidly.
A. 
B. 
C. 
D. 
Mathematics
Multiply.
× 
A. 
B. 
C. 
D. 
Mathematics
Find the indicated quantity.n, when a1 = 312, an = 52, and d = -20;
A. 14 B. 11 C. 13 D. 12
Mathematics
Solve the inequality.-7 < x - 4 < -3
A. x < -3 or x > 1 B. -3 ? x ? 1 C. -1 < x < 3 D. -3 < x < 1
Mathematics