Answer:
7
Step-by-step explanation:
7 shows up twice
all other numbers show up only once.
2000 is 1000 times larger than 2
Number 1 and number 3 are the same because if you are purchasing three tires that is 75% off the tires you need and one of them you get free. the free one becomes the overall discount of 25% off. number 3 is the same, the one quarter represents 25% off of the purchase.
-4 is the slope in the equation
