Write the interval as an inequality involving x, and illustrate the inequality using the real number line.[-7, 3]
A. -7 ? x ? 3
B. -7 < x < 3
C. -7 ? x < 3
D. -7 < x ? 3
Answer: A
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Find T, N, and B for the given space curve.r(t) = 
i + 
j + 3tk
A. T = 
(cos 0.571t)i - 
(sin 0.571t)j ; N = (-sin 0.571t)i - (cos 0.571t)j ; B = 
(cos 0.571t)i - 
(sin 0.571t)j - 
k
B. T = 
(sin 0.571t)i - 
(cos 0.571t)j ; N = (-sin 0.571t)i - (cos 0.571t)j ; B = 
(cos 0.571t)i - 
(sin 0.571t)j - 
k
C. T = 
(cos 0.571t)i - 
(sin 0.571t)j + 
k ; N = (-sin 0.571t)i - (cos 0.571t)j ; B = - 
k
D. T = 
(cos 0.571t)i - 
(sin 0.571t)j + 
k ; N = (-sin 0.571t)i - (cos 0.571t)j ; B = 
(cos 0.571t)i - 
(sin 0.571t)j - 
k
Solve the problem.The temperature at the North Pole was -47°F at 8 am. At 3 pm, it was 17°F. By how many degrees did the temperature rise?
A. by 30°F B. by -64°F C. by 64°F D. by -30°F
Find the indicated probability.The following table contains data from a study of two airlines which fly to Small Town, USA.
If one of the 87 flights is randomly selected, find the probability that the flight selected is an Upstate Airlines flight which was on time.
A. 
B. 
C. 
D. None of the above is correct.
Find the amount that will be in an account, given the stated conditions.P = $12,000, t = 3, r = 10% compounded quarterly
A. $4138.67 B. $15,745.04 C. $15,972.00 D. $16,138.67