In Fig. 1, the t-axis represents time in minutes.Figure 1(a) What is f(2)?(b) Solve f(t) =...

In Fig. 1, the t-axis represents time in minutes.

Figure 1

(a) What is f(2)?

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(b) Solve f(t) = 1

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(c) When does f(t) attain its greatest value?

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(d) When does f(t) attain its least value?

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(e) What is the rate of change of f(t) at t = 7.5?

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(f ) When is f(t) decreasing at the rate of 1 unit per

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minute? That is, when is the rate of change equal to −1?

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(g) When is f(t) decreasing at the greatest rate?

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(h) When is f(t) increasing at the greatest rate?