Roger is a wildlife researcher who has been hired to study and track the population of bears in a national park. In year one of the study Roger determines that the park is home to X bears. In year two the population has increased to X+10 bears, and in year 3 the population has increased to 2(x+10) bears.

Use the distributive property to rewrite the bear population in year 3 without needing to use parentheses

2x + 20