find f(a), if f(t) = 2t2(squared)-t-2

Question

A. 2(a+t)2(squared)-2t+1-2
B. 2(t+a)2(squared)-2(t+a)-2
C. 2a2(squared)-a-2
D. 4a2(squared)-2a-2

I put (squared) because the two in front of it means it's being squared... please help. thanks!

Answer 1

Which answer would you choose if you replace all the "t" on the right hand side of the function definition by "a"?

Answer 2

I'm not sure, A??

Answer 3

or C?

Answer 4

Yes, it's C.

Change all the t's to a's in
f(t) = 2t2(squared)-t-2
you get
f(a) = 2a2(squared)-a-2

Answer 5

ahh thanks!