Use the change of base rule to find the logarithm to four decimal places.log8.2 3.7
A. 0.5682
B. 0.4512
C. 0.6218
D. 1.6083
Answer: C
Mathematics
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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) = (9 tan t)i - (9 sin t)j + (4 cos2 t)k ; t0 = 
A. x = 9 + 18t, y = -
- 
t, z = 4 - 4t
B. x = 18 + 9t, y = -
- 
t, z= -4 + 2t
C. x = 9 + 18t, y = -
- 
t, z = 2 - 4t
D. x = 9 + 18t, y = -
+ 
t, z = 2 + 4t
Mathematics
Find the absolute value.|-71|
A. 0
B. -71
C. 
D. 71
Mathematics
Express the graph shown using interval notation. Also express it as an inequality involving x.
A. [-6, -5] -6 ? x ? -5 B. [-6, -5) -6 ? x < -5 C. (-6, -5] -6 < x ? -5 D. (-6, -5) -6 < x < -5
Mathematics
Multiply or divide. Write the answer in lowest terms.
÷ 
A. z - 4
B. 
C. 
D. 
Mathematics