[tex] t_{1} [/tex]
1.) Cannot be determined because an arithmetic sequence has to have 3 given terms, the given example has only 2.
2.) Arithmetic sequence formula:
[tex] t_{n} [/tex] = [tex] t_{1} [/tex] + (n-1)d
[tex] t_{8} [/tex] = [tex] t_{1} [/tex] + (8-1)-2
2 = [tex] t_{1} [/tex] + (7)-2
2 = [tex] t_{1} [/tex] + -14
2 + 14 = [tex] t_{1} [/tex] + -14 + 14
16 = [tex] t_{1} [/tex] + 0
16 = [tex] t_{1} [/tex] = 1st term
Answer: 16
