Answer:

Step-by-step explanation:
Given

Required
Write a definition
First, we derive a formula for the series using:

From the attached data;


So:



Collect like terms


So, the definition for first 7 terms is:

Hope it helps with your work
Answer:
one way is L times W (length times width)
Step-by-step explanation:
for example if you had 5ft. for length and 6ft. for width you would times the two to get you area
Answer:
march 9
Step-by-step explanation:
10+3-4
=9
I think that's the answer
To get the answer. you have to find the unit rate.
To find the unit rate, divide 2.50 by 5 which is 0.5 or 50 cents.
(You can check to see if you did this right by multiplying, so .5x5=2.5)
Then you multiply .5 by 7 which is 3.5, or $3.50.