Evaluate the function

Hello ! :) 

 

I wonder if anyone could correct me or help me to resolve this ?

 

1. Evaluate the function f(t) = 6t^3 - 4t^2 + t -7 For thr following values of t 

 

(a) t = 1 ? Could somone explain me what I have to do ? 

 

From what I understand, t = 1 SO do i have to plug T as 1 everytime I see a T ? 

 

So 6*1^3 - 4*t^2 + 1-7 ? IS THAT CORRECT ? 

 

but then ? What does it mean to evalute the function? What do I have to do ? 

 

 

Best, and THANK YOU 

Thalys :)