Posted by CC on Monday, November 26, 2012 at 12:19pm.
A theater has 43 seats in the first row, 47 seats in the second, and 51 seats in the third row. How many seats are there in row 17

Algebra 2  Reiny, Monday, November 26, 2012 at 12:36pm
term(1) = 43
term(2) = 47
a = 43 , d = 4
term(17) = a + 16d
= 43 + 16(4) = 107