SAT Subject Test Mathematics Level 2

SUBSTITUTION

The most straightforward functions questions you’ll encounter on Math 2 are questions like
Example 1 that ask you simply to apply a function to some number or expression.

Example 1

To find f(q − 1), plug t = q − 1 into the definition. Substituting an algebraic expression for t is a little
more complicated than substituting a number for t, but the idea’s the same.

1. If    ,  then    f(q −   1 ) =

(A)

(B)

(C)

(D)

(E)