Answer:
It helps you know if the answer is reasonable because when you do the work and get your answer, you can check if it is close to your estimate, and if it is, it is most likely correct. On the other hand if it is not close to the estimate it is most likely wrong, unless you estimated incorrectly.
Step-by-step explanation:
The answer is B) 20 lbs for $22 because carol is getting 8 pounds more for only $9+
Answer:
27k+3=0
Step-by-step explanation:
Write in standard form.
this way?
SAS is one of the answers
Answer:
7,410,000
Step-by-step explanation: