
- d is distance, (x_1,y_1) and (x_0,y_0) two points on a coordinate grid.
In our case :

Answer: 4 apples for $3.64
Step-by-step explanation:
The best buy is going to be the one that costs the least. To figure this out, you divide the number of apples by the price. (do not round)
4/3.64=1.09
9/8.01=1.23
14/12.43=1.12
24/21.12=1.13
As you can see, the 4 apples for $3.64 is the better choice since the number is the least.
1) 94
2) 77
3) 290
4) 682
5) 45
6) 925
7) 416