The A poverty threshold represents the minimum annual household income for a family not to be considered poor. In
1995, the poverty threshold for a family of four with two children under the age of 18 years was $15,711. In 2005,
the poverty threshold for a family of four with two children under the age of 18 years was $19,405. Assuming
poverty thresholds increase in a straight-line fashion, use the midpoint formula to estimate the poverty threshold
of a family of four with two children under the age of 18 in 2000.