A geologist measures the temperature T (in C) of the soil at various depths below the surface and finds that at a depth of x cm, the temperature is given by T =0.08x - 4.

(a) What is the temperature at a depth of 1 m (100 cm)?
(b) Sketch a graph of the linear equation.
(c) What do the slope, the x-intercept, and T-intercept of the graph represent?

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