Solve the problem.A baby weighed 8 pounds at birth and gained 2 pounds a month. How much did the baby gain in 3 months?

A. 30 lb
B. 6 lb
C. 13 lb
D. 14 lb

Answer: B

Mathematics

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Perform the matrix operation.Given A =  and I =  , find AI.

A.

B.

C.

D.

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Write the improper fraction as a mixed or whole number.

A.
B.
C.
D. 7

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Find the unit tangent vector of the given curve.r(t) = (8t cos t - 8 sin t)j  + (8t sin t + 8 cos t)k

A. T(t) = - (sin t)j  + (cos t)k
B. T(t) = (-sin t)j  + (cos t)k
C. T(t) = (8 cos t)j  - (8 sin t)k
D. T(t) = (-8 sin t)j  + (8 cos t)k

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Approximate the number using a calculator. Round your answer to three decimal places.e3.6

A. 9.786 B. 36.598 C. 32.523 D. 36.898

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Mathematics