The half life is 138 days, meaning exactly half of the material will decay after this time. Use this information to find the decay factor
:

Then after 250 days, there will be

grams left.
5 would be the dependent variable because the number 5 depends on how many greeting cards are bought.
Answer:
2.5
Step-by-step explanation:
5/2=2.5
half of 2 is 1 so for 1 cup of coco has 2.5 tbs of coco.
Answer:
The commutative property
Step-by-step explanation:
a math rule that says that the order in which we multiply numbers does not change the product.