I need this answer asap

its 18

Step-by-step explanation:

you just have to count the sides

18

Step-by-step explanation:

count the boxs at the bottom rectangle that is all filled in and then because it is symettrical flip the triangle over to make a box on top like a sandwhichcut diagnollly and then count those too  

chicken chicken chicken

step-by-step explanation:

, 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