Question

a medical researcher has two petri dishes containing viruses. dish b has a population density of 1.2 viruses per square millimeter. dish a has an area of about 2,826 square millimeters.
if both petri dishes have the same population density, approximately how many viruses are in dish a?
2,355 viruses
3,391 viruses
23,550 viruses
33,912 viruses

Explanation:

Step1: Recall the formula for population

Population = Population density × Area.

Step2: Substitute the given values

Given population density \(d = 12\) viruses per square - millimeter and area \(A=2826\) square - millimeters.
Population \(P=d\times A\).
So, \(P = 12\times2826\).
Calculate \(12\times2826=(10 + 2)\times2826=10\times2826+2\times2826\).
\(10\times2826 = 28260\) and \(2\times2826=5652\).
Then \(28260+5652=33912\).

Answer:

33,912 viruses