Find the angle.sec-1 
A. 
B. 
± 2?n, 
± 2?n
C. 
D. 
Answer: C
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Use logax = (ln x)/(ln a) to calculate the logarithm. Round to the nearest ten thousandth.log7 71
A. 0.8451 B. 0.4565 C. 1.8513 D. 2.1906
Solve the problem.A survey of 145 college students was done to find out what elective courses they were taking. Let A = the set of those taking art, B = the set of those taking basketweaving, and C = the set of those taking canoeing. The study revealed the following information.n(A) = 45 n(A ? B) = 12n(B) = 55 n(A ? C) = 15n(C) = 40 n(B ? C) = 23n(A ? B ? C) = 2How many students were not taking any of these electives?
A. 63 B. 10 C. 53 D. 55
Solve the problem.Before exercising, an athlete measures her air flow and obtains a = 0.65 sin 
where a is measured in liters per second and t is the time in seconds. If a > 0, the athlete is inhaling; if a < 0, the athlete is exhaling. The time to complete one complete inhalation/exhalation sequence is a respiratory cycle. What is the amplitude? What is the period? What is the respiratory cycle? Graph a over two periods beginning at t = 0. 
What will be an ideal response?
Find an equation for the conic that satisfies the given conditions. parabola, vertex (0, 0), focus (0, –4)
What will be an ideal response?