Please help me find the answer thank you
1 answer:
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Answer:
D.
Step-by-step explanation:
Given:
Initial amount in the bank = $1000
Money withdrawn each week = $100
Final amount should be at least $500.
Now, let the number of weeks the money is withdrawn be 'w'.
Therefore,
Money withdrawn in 'w' weeks =
Total Money withdrawn in 'w' weeks =
Now, final amount after 'w' weeks is equal to the difference between initial amount and total withdrawal amount. Therefore,
Final amount = Initial amount - Total withdrawal amount
Final amount =
Now, final amount must be greater than or equal to $500. So,
Therefore, the inequality that represents the inequality for the number of weeks Amy can withdraw money is:
Now, let us solve for 'w'.
Adding -500 and 100w both sides, we get:
Therefore, the correct option is (D).
Using exponential function concepts, it is found that it represents a decay of 0.9%.
<h3>What is an exponential function?</h3>
A decaying exponential function is <em>modeled </em>by:
In which:
- A(0) is the initial value.
- r is the decay rate, as a decimal.
In this problem, the function is:
Hence:
Thus, it represents a decay of 0.9%.
You can learn more about exponential function concepts at brainly.com/question/25537936