Question

Algebra Help change over time

Answer 1

The variation of a quantity (here 4400) by "some percent" can be always be expressed as "\(4400 \times \text{a number}\)".

The rule is: set \(r = \text{percentage}\) (number between 0 and 1), here \(r=0.0825\).
Decrease in \(8.25\%\) means : multiplying by \(1 - r\).

So: 4400 * (1-r) is a decrease of 8.25%, once.
4400 * (1-r) * (1-r) is a decrease of 8.25% twice.
etc.

Answer 2

Hello again!

Answer 3

wait so r=8.25?

Answer 4

so for 11 years the equation would be 4400(1-r)^11?

Answer 5

r = 0.0825. Since 8.25% is = 8.25 / 100

Yes, it's `4400(1-r)^11`

Answer 6

Thank you

Answer 7

you're welcome