The quantity of bacteria in a petri dish decreases by half every day of the study. After 3.5 days, 0.71 grams of bacteria was left.
An equation is an expression that shows the relationship between two or more variables and numbers.
Let y represent the number of bacterias after x days. The bacteria in a petri dish decreases by half every day of the study. Hence:
y = 8(0.5)ˣ
After 3.5 days:
y = 8(0.5)^(3.5) = 0.71
The quantity of bacteria in a petri dish decreases by half every day of the study. After 3.5 days, 0.71 grams of bacteria was left.
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