Determine whether the equation defines y as a function of x. y = 
A. function
B. not a function
Answer: A
Mathematics
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Find the curvature of the space curve.r(t) = (4 t sin t + 4 cos t)i + 4j + (4t cos t - 4 sin t)k
A. ? = 
B. ? = 4t
C. ? = 
D. ? = - 
Mathematics
Find the value of (f ? g)' at the given value of x.f(u) = 
, u = g(x) = 3x - x2, x = 1
A. - 1
B. - 
C. 1
D. 
Mathematics
Find the square root, rounded to hundredths if necessary.
A. 7 B. 6 C. 12 D. 8
Mathematics
Solve.Amy teaches Chinese lessons for $85 per student for a 6-week session. From one group of students, she collects $2465. Find how many students are in the group.
A. 31 students B. 29 students C. 19 students D. 33 students
Mathematics