Lydia and cliff bought a lot with the intention of building a house on it. they needed to determine how much it would to build the house. they were told by contractors that the cost to build would be $40 per square foot for a garage and $80 per square foot for the home. lydia and cliff had plans drawn for the the house. they used the total square footage of the house and garage to calculate the cost to build

, 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

your question is incomplete, write all the numbers in the sequence that it tells you.  

step-by-step explanation: