Answer:
(f −1)(a)= -5
Step-by-step explanation:
From the problem statement, let us say that you were meant to write
f(-1)a so that x= -1
Moving forward this question requires that we substitute the value of x= -1 in the given equation and multiply the final answer by a which 5
[tex]f(x) = 3x^3 + 3x^2 + 6x + 5 \\ f(-1)\\a = 5[/tex]
Substituting x=-1 for x in the expression we have
[tex]f(-1) = 3(-1)^3 + 3(-1)^2 + 6(-1) + 5\\\\f(-1)= 3(-1)+3(1)-6+5\\\\f(-1)= -3+3-6+5\\\\f(-1)= -1\\\\f(-1)a= -1*5\\f(-1)a= -5[/tex]
