we need to solve in order
[tex]a_1=4[/tex][tex]\begin{gathered} a_2=5a_{2-1}-4 \\ a_2=5a_1-4 \\ a_2=5(4)-4 \\ a_2=20-4 \\ a_2=16 \end{gathered}[/tex][tex]\begin{gathered} a_3=5a_{3-1}-4 \\ a_3=5a_2-4 \\ a_3=5(16)-4 \\ a_3=80-4 \\ a_3=76 \end{gathered}[/tex]the value of a3 is 76
