Solve the initial value problem.ty' + (1 + t)y = 2; y(4) = 2

A. y = 
B. y = 
C. y = 
D. y = 


Answer: B

Mathematics

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Solve.The velocity v of a falling object (ignoring air resistance) is directly proportional to the time t of the fall. If, after 4 seconds, the velocity is 128 feet per second, what will its velocity be after 9 seconds?

A.  foot/second
B. 288 feet/second
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Write interval notation for the graph.

A. [-5, -1) B. (-5, -1] C. [1, 5) D. (1, 5]

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Add. Do not use a number line except as a check.-  + 

A. - 
B.
C. - 
D.

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