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saw5 [17]
3 years ago
8

You put some money in a bank account one year ago

Mathematics
2 answers:
vaieri [72.5K]3 years ago
8 0

Answer: Balance-28=-0.25(months-8)

Step-by-step explanation:

podryga [215]3 years ago
8 0

Answer:

Balance-28=-0.25(Months-8)

Step-by-step explanation:

Givens

  • Tha bank takes out $0.25 each month. This means the constant ratio of variatio is 0.25 and has to be negative, because it represents a decreasing ratio.
  • After 8 months, you had $28.

So, basically, we need to think this from a linear model persepective, where the given point is (8,28) and the slope of the line that represents it is m=-0.25.

Then, we recur to the point-slope formula

y-y_{1} =m(x-x_{1} ), where x_{1}=8 and y_{1}=28, replacing these values, we have

y-y_{1} =m(x-x_{1} )\\y-28=-0.25(x-8)

Where y is BALANCE and x is MONTHS. So,

Balance-28=-0.25(Months-8)

Therefore, the right answer is the choice at the upper right corner

Balance-28=-0.25(Months-8)

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