When nutrients for a bacteria culture are exhausted, the bacteria culture goes through the death, or decay, phase of the bacteria growth curve. The following graph shows the number of living bacteria in the colony as a function of time, in hours, after the start of the decay phase. Determine the statement that correctly interprets the graph of the function.
A function is graphed in the first quadrant of the coordinate plane. The horizontal axis is labeled Time in hours and ranges from 0 to 20 in increments of 1. The vertical axis is labeled Living Bacteria in thousands and ranges from 0 to 200 in increments of 10. From left to right, a curve starts at the plotted and labeled point left parenthesis 0 comma 180 right parenthesis and falls at a decreasing rate, passing through plotted and labeled points left parenthesis 4 comma 133.2 right parenthesis, left parenthesis 8 comma 98.57 right parenthesis, left parenthesis 12 comma 72.94 right parenthesis, and left parenthesis 16 comma 53.98 right parenthesis.
(1 point)
Responses
The number of living bacteria in the culture decreases by about 6.5%
each hour.
The number of living bacteria in the culture decreases by about 6.5 percent each hour.
There were 133,200
living bacteria in the culture at the start of the decay phase.
There were 133,200 living bacteria in the culture at the start of the decay phase.
The number of living bacteria in the culture decreases by about 7.25%
each hour.
The number of living bacteria in the culture decreases by about 7.25 percent each hour.
The number of living bacteria in the culture decreases by about 26%
each hour.
The number of living bacteria in the culture decreases by about 26 percent each hour.
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