Add the polynomials. Express your answer in standard form.(3b3 - 5b - 2) + (5b4 - 7b3 + b2 - 6b)
A. 5b4 + 4b3 + b2 - 11b - 2
B. 5b4 - 10b3 + b2 + 11b - 2
C. 5b4 - 4b3 + b2 + 11b - 2
D. 5b4 - 4b3 + b2 - 11b - 2
Answer: D
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Find T, N, and B for the given space curve.r(t) = 
(1 + t)3/2i + 
(1 - t)3/2j + 2tk
A. T = 
i + 
j + 
k; N = 
i + 
j; B = 
i + 
j + 
k
B. T = 
i - 
j + 
k; N = 
i + 
j; B = - 
i + 
j + 
k
C. T = 4
i - 4
j + 2k; N = 3
i + 3
j; B = - 1
i + 1
j + 4
k
D. T = 
i - 
j + 
k; N = 
i + 
j ; B = - 
i + 
j + 
k
Solve the problem.If the life of a car engine, calculated in miles, is normally distributed, with a mean of 180,000 miles and a standard deviation of 12,500 miles, what should be the guarantee period if the company wants less than 2% of the engines to fail while under warranty?
A. Less than 154,375 miles B. Less than 169,500 miles C. Less than 205,625 miles D. Less than 144,000 miles
Express the set of real numbers graphed on the number line using an inequality.
A. x < 2 B. x ? 2 C. x ? 2 D. x > 2
Write out the first five terms of the sequence.{n2 - n}
A. 1, 4, 9, 16, 25 B. 0, 2, 6, 12, 20 C. 0, 3, 8, 15, 24 D. 2, 6, 12, 20, 30