The Bureau of Justice Statistics reports that the number of Americans on probation increased 76% from 1980 to 1995 and that 3.09 million Americans were on probation in 1995. If the rate of increase continues in the same way for the next 15-year period, what might be the number of Americans on probation in 2010?

For this case, what we are going to do is first define variables.

x: current number of Americans.

y: number of Americans after the next 15 years.

We now write the expression to model the problem, assuming:

"the rate of increase continues in the same way for the next 15-year period".

We have then:

y = 1.76 * x

y = 1.76 * (3.09)

y = 5.44 million Americans

Answer:

the number of Americans on probation in 2010 might be:

y = 5.44 million Americans