Hope this helps!!!!!!!!!!!!!!!!!!!!!!!! :D
Answer:

Step-by-step explanation:
to find the slope between two points use the formula 

simplify

divide -12 by -4

Answer:
8 pack is best to buy
Step-by-step explanation:
the cost for per piece base ball cap of 4 pack is 5.86 where as the per piece of 8 pack baseball is 5.84. 8 pack baseball cap is $0.02 cheaper