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V125BC [204]
2 years ago
5

Alice is saving her chore money in a bank account. She makes a deposit of $13 in the first month.

Mathematics
1 answer:
Elis [28]2 years ago
6 0

Answer:

Option (3) and Option (5)

Step-by-step explanation:

Alice invested $13 in the first month.

Then she deposits $25 every month.

Therefore, sequence formed by the deposit will be an arithmetic sequence.

First term of the sequence will be,

A_1=13

Since, recursive formula formula of a sequence is given by the formula,

A_n=A_{(n-1)}+d

Where 'd' = common difference in each term of the sequence

Recursive formula for the sequence will be,

A_n=A{(n-1)}+25

Since, explicit formula for the arithmetic sequence is represented by the formula,

A_n=A_1+(n-1)d

where n = number of term

d = common difference

Therefore, nth term of the sequence formed will be represented by the explicit formula,

A_n=13+(n-1)25

A_{10}=13+(10-1)25

      = 13 + 225

      = 238

A_{8}=13+(8-1)25

     = 188

A_{12}=13+(12-1)25

      = 288

Therefore, Option (3) and Option (5) will be the answer.

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We know that C is 385, so we can plug that in to get the equation 385=15n+85. To find the number of watches, we have to solve for n.
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