Question

PLEASE HELP. Let the function F be defined by f(x) = 2x . Which of the following expressions is equivalent to f(5t)?
A. 2t
B. 5t
C. 7t
D 10t
E. 25t

Answer 1

F be defined by f(x) = 2x

This is saying let f be defined by f (of some input) = two times (whatever that input is)

So when you write f(5t) your "input" is just "5t"

so what is 2 times (5t) ?

Answer 2

10t !

Answer 3

You got it. :)

Answer 4

Thank you very much!

Answer 5

You're welcome.