Answer:
9.5
Step-by-step explanation:
Substitute a = 5 and b = 1 into the expression
[tex]\frac{3(5)^2+1}{9(1)^3-1}[/tex]
= [tex]\frac{3(25)+1}{9(1)-1}[/tex]
= [tex]\frac{75+1}{9-1}[/tex]
= [tex]\frac{76}{8}[/tex]
= 9.5
