Find the arc length parameter along the curve from the point where t = 0 by evaluating 
r(t) = (1 + 5t)i + (1 + 8t)j + (4 - 4t)k
A. 4
t
B. 
t
C. 
t
D. 
t
Answer: B
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Find the center and the radius of the circle.x2 + y2 - 6x + 6y = -2
A. (-3, 3); r = 4 B. (3, -3); r = 16 C. (-3, 3); r = 16 D. (3, -3); r = 4
Solve the problem.A survey of senior citizens at a doctor's office shows that 57% take blood pressure-lowering medication, 40% take cholesterol-lowering medication, and 3% take both medications. What is the probability that a senior citizen takes either blood pressure-lowering or cholesterol-lowering medication? Round to the nearest hundredth.
A. 0.94 B. 0 C. 0.97 D. 0.20
Find the indicated angle or side. Give an exact answer.Find the measure of angle A in degrees.
A. 75° B. 60° C. 30° D. 45°
Graph the function. Describe its position relative to the graph of the indicated basic function.f(x) = 2x + 4; relative to f(x) = 2x
A. Moved down 4 unit(s)
B. Moved up 4 unit(s)
C. Moved down 4 unit(s)
D. Moved up 4 unit(s)