A class sold tickets to their school play. Each of the 23 students in the class sold 4 tickets. The cost of each ticket was $7.

$644

23 students x 4 tickets sold per student= 92 tickets sold

92 tickets sold x 7 amount per ticket= $644

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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

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