Liz has two Garden and wants to build a fence around each she wants to buy all the fans at one time did the diagram below shows her to Gardens which of the following correctly shows the total amount of fencing in feet Lyn's will need to buy for both gardens

figure c

step-by-step explanation:

hope this .

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for