Question 1057748
To begin a bacteria study, a petri dish had 1900 bacteria cells.
 Each hour since, the number of cells has increased by 4.2%
Let t be the number of hours since the start of the study 
:
f(t) = no of bacteria
f(t) = 1900(1.042)^t
:
Graphically, no. of bacteria y axis, hours x axis
{{{ graph( 300, 200, -5, 20, -1000, 5000, 1900(1.042^x)) }}}