Perform the indicated operation.(-5 + x2 + 2x) + (6x + 9 + x3) + (-5x - 1 + 3x3)
A. 4x3 + 7x2 - 3x + 3
B. 5x3 + 3x + 3
C. 4x3 +x2 + 3x + 3
D. 4x3 + x2 + 3x - 6
Answer: C
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 1 for r(t) = t5i + 5ln
j + 
k
A. a(1) = 20i - 5j - 2k
B. a(1) = 20i + 
j + 2k
C. a(1) = 20i + 
j - 2k
D. a(1) = 20i + 5j + 2k
One root of the equation is given. Find the remaining roots of the equation using synthetic division.x4 - 4x3 + 2x2 - 4x + 1 = 0; j
A. -j, 1 + 
, 1 - 
B. -j, -2 + 
, -2 - 
C. -j, 2 + 2
, 2 - 2
D. -j, 2 + 
, 2 - 
Use a calculator to find the function value to four decimal places.cos 
A. -0.9239 B. -0.7203 C. 0.9705 D. 0.3827
Approximate the natural logarithm with a scientific calculator. Round to four decimal places.ln 0.00057
A. -7.4699 B. 3.2441 C. 7.4699 D. -3.2441