Solve the problem.The value y of a machine (in dollars) is known to depreciate linearly with time x (measured in years from the time it was bought new). Suppose that y is related to x by the equation 
(a) Sketch the graph of this linear equation for 0 ? x ? 10.(b) What is the value of the machine when it is 5 years old?(c) What is the economic interpretation of the y-intercept of the graph?(d) When will the value of the machine reach the scrap value of $400??
What will be an ideal response?
(a)
(b) $1000
(c) the value of the machine when it is new
(d) 8 years
Mathematics
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Provide an appropriate response.(a) Show that 
dx = 
e-4 < 0.0092 and hence that 
dx < 0.0092.(b) Explain why this means that 
dx can be replaced by 
dx without introducing an error of magnitude greater than 0.0092.
What will be an ideal response?
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Complete the sentence so the result is an identity. Let x be any real number.cos x = (cot x)( )
A. sec x B. sin x C. csc x D. tan x
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What part of the object or set of objects is shaded?
A. 
B. 
C. 
D. 
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Evaluate the function.f(x) = 5x2 - 5x + 4; Find f(t - 1).
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Mathematics