Snirina S.

asked • 01/12/23

Josephina makes monthly deposits into her account. She opened the account with an initial deposit of $50. Each month thereafter, she increased the deposit by $20 from the previous deposit amount.

Two years later, how much has Josephina deposited in this account?

(Use an expression using sigma notation for partial sums).

1 Expert Answer

By:

Mark M. answered • 01/12/23

Tutor
5.0 (278)

Mathematics Teacher - NCLB Highly Qualified

See tutors like this
See tutors like this

S24 = (24/2)(50 + (23)(20))

Upvote • 0 Downvote
More
Report

Peter R.

tutor
Sequence starts with $20 and goes up from there with a "d" of $20. Then add the initial $50 at the end. Answer is $6,050. (24/2)[(2)(20) + (23)(20)] + 50. Try it the old-fashioned way to check..
Report

01/12/23

Gwen B.

Is Josephine adding $20 to her account each month. OR is she increasing the AMOUNT of her deposit each month? For example, $20 the first time, $40 second time, $60 the third time etc.?
Report

01/18/23

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.