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Yanka [14]
2 years ago
14

Mrs. Speas has $138 in her bank account during Week #1. At the end of each week, she deposits $55 into her bank account. What is

the first term?
What is the difference?

What is the iterative rule for the amount of money Mrs. Speas has after n weeks? (you are NOT required to simplify)​
Mathematics
2 answers:
nordsb [41]2 years ago
6 0

The first term is 138

The difference is 55

The iterative rule for the amount of money Mr Speas has after n weeks is

55/2 n² + 221/2 n

During the first week she has $138 in his bank account. At the end of each week she deposited $55 into her bank account.

The first term will be 138 .

The common difference is 55 because her bank always increase by $55 dollars every week. The sequence will be 138, 193, 248, 303, 358...…

The difference = 193 - 138 = 55.

The iterative rule for the amount of money Mr Speas has after n weeks can be represented  below

n = number of weeks

a = first term = 138

d = common difference = 55

Using AP formula,

sₙ = n/2(2a + (n - 1)d)

sₙ = n/2 (2(138)+ (n - 1)55)

sₙ = n /2(276 + 55n -55)

sₙ = n /2(221 + 55n)

sₙ = 55/2 n² + 221/2 n

read more: brainly.com/question/20373665?referrer=searchResults

9966 [12]2 years ago
4 0

Answer:

24

Step-by-step explanation:

is the answer.

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