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The problem

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I don’t understand answer to this problem

d(4)= 12t+25

Answer provided by our tutors

General functional notation (e.g. d(t) ) is not supported. If you wish to draw a function such as d(t) = 12t+25, replace d(t) with y (or any other unused variable).

Click here to see the graph for 'y = 12t + 25'

If you need to find the value of d(t) for 't = 4', you need to plug the value:

d(4) = 12*4 + 5

d(4) = 48 + 5

d(4) = 53

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