Use the graph representing bacteria decay to estimate the domain of the function and solve for the average rate of change across the domain
,
a.

b.

c.

d.

C.

Step-by-step explanation:

The domain of the function refers to all values of x for which the function is defined.

From the diagram the graph of the function exist on the interval to .

The average rate of change is the slope of the secant line joining the points (0,f(0)) and (55,f(55)).

The average rate of change of this function f(x) on this interval is

From the graph, and .

The average rate of change becomes:

to the nearest hundredth.

The correct answer is: C

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

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