The team scores points for each touchdown.

Step 1:

Phrase: The team scores points for each touchdown.

Variable: Let represents the number of touchdown.

Expressions: .

Therefore, the algebraic expression is .

Step 2:

Make a table for team scores.

\ Number of touch downs \ Input \	\ Rule \ \	\ Number of points \ Output \

Step 3:

Find the domain and range.

Domain: Set of all - coordinates is .

Range: Set of all - coordinates is .

\ Number of touch downs \ Input \	\ Rule \ \	\ Number of points \ Output \

The domain is and the range is .