Find a and b.If 6 < x < 7, then a < 1 - 9x < b.
A. a = -53, b = -62
B. a = 64, b = 55
C. a = -62, b = -53
D. a = 55, b = 64
Answer: C
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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 sin t)i - (6 cos 5t)j +e-9tk ; to = 0
A. x = 9, y = -6t, z = -9 + t B. x = 9t, y = -6, z = 1 - 9t C. x = 9t, y = -6, z = 1 - t D. x = 9t, y = 6, z = 1 + t
Provide an appropriate response.To convert mixed numbers to improper fractions, multiply the whole number times the denominator of the fraction and add the product to the original denominator.
A. True B. False
Evaluate the expression without a calculator.log121
A. 12 B. 1 C. 10 D. 0
Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in ordered pair form.
A. {(3, -2)} B. {(3, -1)} C. {(2, -1)} D. ?