The area of a sign in the shape of a square is 219 square inches. Which measurement is closest to the side length of this sign in inches?
55 in.
B
15 in.
7 in.
D 110 in.

55in is the answer

Step-by-step explanation:

I had the same test

, 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

answer. d.289 hope that