## Answer :

False, it represent range,

2)

False, It is a function

3)

True, c represent range

4)

x=20

C=20*20+5=405

It is a function, for amount we assigne one value.

The total cost of T-shirts sold represents the domain

This model is a relation but not a function

The total cost of T-shirts sold represents the range

The cost of 20 T-shirts is $405.00 This model is a function

False, it represent range,

2)

False, It is a function

3)

True, c represent range

4)

x=20

C=20*20+5=405

It is a function, for amount we assigne one value.