Use the graph representing bacteria decay two estimate the domain of the function and sulfur the average rate of change across the domain.

and (average rate of change is approximate)

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The domain is the set of allowed x inputs of the function. The smallest x value shown is x = 0, which is from the point (0,80). The largest x value possible is x = 55 from the point (55,0)

The domain is the set of all values between 0 and 55, including both endpoints. Therefore, we get a domain of

Compute the slope of the line through (0,80) and (55,0) to find the average rate of change over the entire function domain.

m = (y2 - y1)/(x2 - x1)

m = (0 - 80)/(55 - 0)

m = -80/55

m = -1.45 approximately

The slope of the line through (0,80) and (55,0) is approximately -1.45, which is also the average rate of change over the entire domain.

Side note: the negative slope or negative rate of change indicates we are going downhill ultimately as we move from left to right.

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

overpriced

step-by-step explanation: