Nina`s grandmother deposits $73,000 into a savings account for her. The account pays 5.5% simple interest on a regular basis. If she does

not add or withdraw money from the account, how much interest will

she earn after 21 months? Round to the nearest cent.

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150

, 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