4. A lumber company owns 2,100,000 trees in the Adirondacks. They intend to harvest 6% of their stock each year. a) Build an equation that models the amount of trees on the property after t years. b) How many years until half the trees would be harvested? Please use an algebraic solution. c) Your classmate says that 126,000 trees is 6% of 2,100,000; so each year is just 126,000 fewer trees. Is this model equivalent to yours? Why or why not