Question

You put some money in a bank account one year ago

Answer 1

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

Step-by-step explanation:

Answer 2

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

$Balance-28=-0.25(Months-8)$