Translate 7 divided by a number into an algebraic expression

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

You buy a veido game for $60 and the sales tax is 8% what is the total cost for the game including the sales tax

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)