What is the value of (24-3) -44 -413 1-28
1 answer:
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Answer:
Given in order:
- 22% growth
- 12% growth
- 12% decay
- 20% decay
Step-by-step explanation:
The exponential function is in the form
If r is positive (the number in the bracket is larger than 1), then it is <em>exponential growth</em> and if r is negative (the number in the bracket is less than 1), then it is <em>exponential decay.</em>
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<u>Growth or Decay by how much???</u>
The amount that is greater than/less than 1
- The first function's number inside the bracket is greater than 1 by 0.22 (22%). So it is "22% growth".
- The second function's number inside the bracket is greater than 1 by 0.12 (12%). So it is "12% growth".
- The third function's number inside the bracket is less than 1 by 0.12 (12%). So it is "12% decay".
- The fourth function's number inside the bracket is less than 1 by 0.2 (20%). So it is "20% decay".
Answer:
Step-by-step explanation:
we know that
The equation of a exponential decay function is given by
where
y is the value of the investment
x is the number of years
a is the initial value
r is the rate of change
we have
substitute
Find the amount Amy has at the end of 8 years
For x=8 years
substitute the value of x