Which statement describes the mapping? *this is probably easy I’m just really dumb*

Not a function

Step-by-step explanation:

Well because I don't know what they're looking for, it is not a function because there is not one only one y value for each x value.

To be a function x must only have 1 y value or you're really describing a limit which isn't part of the outputs

r and t.

both are 64 degrees.

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72