Calculate the arc length of the indicated portion of the curve r(t).r(t) = 
t3/2i + (5t sin t)j + (5t cos t)k ; -4 ? t ? 6
A. 150
B. 270
C. 140
D. 100
Answer: D
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Provide an appropriate response.Doug Rodante weighed 95 kilograms before losing 350 grams. What is his current weight in kilograms?
A. 91.5 g B. 255 g C. 94.65 g D. 95.5 g
Find the equation of the line that has the given properties. Write the equation in slope-intercept form, if possible. Contains (0, 0); parallel to the line 4x - y = 3
A. y = 
x
B. y = - 
x
C. y = 4x
D. y = - 
x + 3
Solve the problem.The equation D = 
n(n - 3) gives the number of diagonals D for a polygon with n sides. Use this equation to solve the problem. Find the number of sides n for a polygon that has 90 diagonals.
A. 15 sides B. 3 sides C. 12 sides D. 16 sides
Find an equation of the line passing through the two given points.(-9, -2) and (-9, -1)
A. y = -9 B. y = x - 9 C. y = x + 9 D. x = -9