Answer:
7
Step-by-step explanation:
f(x)=3x^2-4x
Let x = -1
f(-1)=3(-1)^2-4(-1)
= 3(1) +4
= 7
[tex]f(x) = 3 {x}^{2} - 4x \\ f( - 1) = 3 \times { (- 1)}^{2} - 4 \times - 1 \\ 3 + 4 \\ = 7 \\ thank \: you[/tex]
