Smith borrows $5,000 on January 1, 2007. He repays the loan with 20 annual payments, starting January 1, 2008. The payments in even-number year are 2X each; the payments in odd-number years are X each. If d = 0:08; find the total amount of all 20 payments. Answer is $10,571.40. Please show solution in a mathematical way. Thank you!! I promise to thumbs up your answer.