Question

The population of Laredo, Texas, was about 215,000 in 2007. It was about 123,000 in 1990,

If we assume that the population growth is constant find the rate of change,
Round to the nearest whole number

Answer 1

`\text{Hello there!}\\\\\text{We're trying to find the rate of change of the population}\\\\\text{We see that the population increased over time, meaning that our rate of}\\\text{change would be positive}\\\text{We know that:}\\\\\text{In 2007 = 215,000 people}\\\\\text{In 1990 = 123,000 people}\\\\\text{Subtract 215,000 by 123,000}\\\\215000-123000= 92,000\,\text{increase in the population}\\\\2007-1990 = 17\,\text{years}\\\\\text{Divide 92,000 by 17}\\\\92000/17=5,411.76\\`

`\text{Round to the nearest whole number:}\\\\5,412\\\\\boxed{\text{Rate of change: 5,412}}`