Solve the problem.A plane flies 450 miles with the wind and 310 miles against the wind in the same length of time. If the speed of the wind is 21 mph, what is the speed of the plane in still air?
A. 139 mph
B. 119 mph
C. 104 mph
D. 114 mph
Answer: D
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Provide an appropriate response.The domain of f(q) = 
is
A. all real numbers except 1 and -1 B. all real numbers except -1, 1, and -2 C. all real numbers except -4 D. all real numbers except -2 and 2 E. all real numbers
A multiple-choice test offers five possible answers for every question, of which only one is the correct answer. A student guesses on six of the questions. What is the probability that she gets exactly two of the guessed questions correct?
What will be an ideal response?
A company of 16 people, 8 boys and 8 girls, decided to go to the cinema. How many ways to seat them in one row exist if any two boys and any two girls should not seat beside each other?
a. 3,251,404,800 b. 1,625,702,400 c. 20,922,789,888,000 d. 128
Multiply.(-0.5)(-17.1)
A. -16.6 B. -17.6 C. 8.55 D. 17.6