The sixteenth and seventeenth terms of an arithmetic sequence are -8 and 10, respectively. What is the second term?
Find common ratio to be - 5/4
then x2 (-5/4)14 = -8 solve for x2
The other answer is for a GEOMETRIC sequence
Here is answer for ARITHMETIC sequence
find the common difference 10 - - 8 = 18
x2 + ( -18)(14) = - 8
x2 = 244
*** EDITED ***
x2 + ( +18)(14) = - 8
x2 = -260
