Find the length of the curve.x = 
y 3/2 - y 1/2 from x = 4 to x = 9
A. 
B. 
C. 6
D. 11
Answer: A
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Sketch the given surface.z = x2 + 4y2
What will be an ideal response?
Find the value of a so that the trigonometric function passes through the given point.y = a cos x(2?, 2)
A. 2? B. -2 C. 1 D. 2
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 expression equivalent to the one given.
A. 
B. 
C. - 
D. - 