ANSWER
[tex]\begin{equation*} -242 \end{equation*}[/tex]
OPTION C
EXPLANATION
Given;
[tex]\begin{gathered} a=1 \\ d=-9 \end{gathered}[/tex]
Recall, the nth term of an arithmetic sequence is calculated using;
[tex]A_n=a+(n-1)d[/tex]
Substituting the values;
[tex]\begin{gathered} A_{n}=a+(n-1)d \\ =1+(28-1)-9 \\ =1+27\times-9 \\ =1+(-243) \\ =1-243 \\ =-242 \end{gathered}[/tex]
The 28th term is -242
