7.3 Modeling Growth & Decay

Presentation

•

Mathematics

•

9th Grade

•

Hard

•

CCSS

HSF.LE.A.2, HSF.BF.A.2

Standards-aligned

Keegan Kuhlman

Used 4+ times

FREE Resource

5 Slides • 6 Questions

7.3 Modeling Growth & Decay

Multiple Choice

How do your write 13% as a decimal?

0.13

1.3

0.013

0.0013

Multiple Choice

How do you write 6.4% as a decimal?

0.64

0.064

6.4

0.0064

Multiple Choice

How do you write 8% as a decimal?

0.8

0.08

8.0

0.008

Compound Interest Formula

This is important! Write it down in your notes!

Example:

Principal = $46,000 (the amount she starts with)
interest = 5% (write it as a decimal 0.05)
time = 10 years

So in our formula...

$A=46000\left(1+0.05\right)^{10}$
Put it in your handy dandy calculator!
After 10 years, she makes $74,929

Multiple Choice

Which of the formulas correctly represents the situation: Simone has a savings account with $925. She earns 2.5% interest compounded annually. How much money will be in the account after 14 years?

$A=925\left(1+0.025\right)^{14}$

$A=925\left(1+0.25\right)^{14}$

$A=925\left(1+2.5\right)^{14}$

Fill in the Blanks

Type answer...

Depreciation

When the value of something goes down at a constant rate (like a car)
Our formula changes a little bit
$A=P\left(1-n\right)^t$
Now, there's a minus sign in parenthesis instead of a +

Fill in the Blanks

Type answer...

7.3 Modeling Growth & Decay

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