Tim wants to purchase a new treadmill for his house. The treadmill he wants cost $1,999.99. b) How much is Tim going to finance from the company?

Let x be the number of folds and y, the thickness (related to the # folds):

Start: 0 fold, thickness 3 mm ==> (0, 3)
1 Fold, Thickness 6 ==> (1,6)
2 Folds, Thickness 12 > (2,12)
3 Folds, Thickness 24 > (3,24)
4 Folds, Thickness 48 > (4,48)
5 Folds, Thickness 96 > (5,96)
6 Folds, Thickness 192 ===> (6,192)

This relation is certainly a function, because for each input we have one & only one output
(Where is part A??. My help stops here)