Solve the inequality. Express your answer using interval notation.0 < (15x - 40)-1 < 
A. (- ?, 3)
B. [3, ?)
C. (- ?, 3]
D. (3, ?)
Answer: D
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Find 
by using the Chain Rule. Express your final answer in terms of t.w = ex cos y + ey cos x; x = -8t, y = 3t
A. e-8t(-8 cos 3t + 3 sin 3t) e3t(3 cos -8t - 8 sin -8t) B. e-8t(-8 cos 3t - 3 sin 3t) e3t(3 cos -8t + 8 sin -8t) C. e3t(-8 cos 3t + 3 sin 3t) e-8t(3 cos -8t - 8 sin -8t) D. e3t(-8 cos 3t - 3 sin 3t) e-8t(3 cos -8t + 8 sin -8t)
If 
, calculate the value of 
?
A. -7.42 B. 13.32 C. -9.96 D. -5.66
Find a pattern and use it to solve the problem.Find the next term: 1, 1, 2, 3, 5, 8, 13
A. 21 B. 16 C. 18 D. 15
For the smooth curve r(t), find the parametric equations for the line that is tangent to r at the given parameter value 
r(t) = (5 tan t)i - (3 sin t)j + (4 cos2 t)k ; t0 = 
A. x = 5 + 10t, y = -
+ 
t, z = 2 + 4t
B. x = 5 + 10t, y = -
- 
t, z = 2 - 4t
C. x = 5 + 10t, y = -
- 
t, z = 4 - 4t
D. x = 10 + 5t, y = -
- 
t, z= -4 + 2t