Each hour since,the number of cells has increased by 7.2%.Let t be the number of hours since the start of the study. Let y be the of the bacteria cells.Write exponential function showing the relationship between y and t .

y = a(1+r)^x

a = initial amount before measuring growth

r = growth rate

x = number of time intervals that have passed

So,

y = 2500(1+.072)^t

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