In 2003, the tax department of a country collected about 1.952 trillion dollars. from 2003 through 2008, collections increased by (approximately) 136 billion (or 0.136 trillion) dollars per year. find a formula for tax collections as a linear function of time from 2003 through 2008. (let n represent the number of years since 2003, and t represent the amount of tax collected in trillions of dollars.)