There are 250 bricks used to build a wall that is 20 feet high. How many bricks will be used to build a wall that is 30 feet high? (Reminder: you can set up a proportion with the information they give you on one side and them line up what you are looking for on the other side.)

understand that i don't know the answers

will someone answer his question

is this part of a question or something

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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

step-by-step explanation: