A geometric solid has 12 faces and 25 vertices. How many edges does the solid have? A) 15 B) 39 C) 37 D) 35

the answer will be b x² +x-1

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

you are uyytr tyy

step-by-step explanation:

where is abdul's work? don't see that anywhere posted : /

step-by-step explanation: