A population of bacteria triples every week in a laboratory. The number of bacteria is modeled by the expression 900 x 3^x, where the x is the population size. When x = -2, what does the value of the expression represent?

Question

A population of bacteria triples every week in a laboratory. The number of bacteria is modeled by the expression 900 x 3^x, where the x is the population size.  When x = -2, what does the value of the expression represent?

anonymous · Answer

simply,substiute -2 for x in the expression, you can use a calculator to evaluate it