Find the curvature of the space curve.r(t) = -9i + (4 + 2t)j + (t2 + 7)k
A. ? = 
B. ? = - 
C. ? = 
D. ? = 
Answer: D
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Simplify.
A. 
B. y7
C. y14
D. y
Let A = {q, s, u, v, w, x, y, z}, B = {q, s, y, z}, 
and 
Specify the following set.A ? B
A. {v, x} B. {q, s, u, v, w, x, y, z} or A C. {s, u, w} D. {s, u, v, w, x, z}
Use Cramer's rule to solve the system or to determine that the system is inconsistent or contains dependent equations.
A. {(18, 9)} B. {(16, 18)} C. inconsistent; no solution or ? D. dependent equations; infinitely many solutions
Set up a linear equation and solve it. Use the variable x in your equation.The Smith family is planning a 245-mile trip. They plan to travel at an average speed of 35 miles per hour. Determine the number of hours the trip will take.
A. 245 = 35x; 7 hours B. 245 = 35x; 6 hours C. 35 = 245x; 8 hours D. 35 = 245x; 9 hours