I assume you mean to ask how to find the sum of the seven terms?
You have



...

So the sum is

You know that

and

, so the sum is equal to
Answer:
to estimate the sum you round to the closest number like 38 is closest to 40 so you just say you total is $40.00
difference is when say you have 30 dollars and you spend 10 the difference is 10 dollars
Answer:
(-9.5,1,7)
Step-by-step explanation:
Answer:
11M + 2X + 8
Step-by-step explanation:
Hope this helps!! :))