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TODAY IN ALGEBRA…  Learning Target : 8.5 You will write and graph exponential growth models.  Independent Practice.

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Presentation on theme: "TODAY IN ALGEBRA…  Learning Target : 8.5 You will write and graph exponential growth models.  Independent Practice."— Presentation transcript:

1 TODAY IN ALGEBRA…  Learning Target : 8.5 You will write and graph exponential growth models.  Independent Practice

2 8.5 EXPONENTIAL GROWTH FUNCTIONS x-2012 y2618 Check to make sure that the x’s are increasing by 1. Find what number the previous term is MULTIPLIED by to get the next term. This will be b in your equation. This will be a in your equation.

3 8.5 EXPONENTIAL GROWTH FUNCTIONS x-2012 y81632 Check to make sure that the x’s are increasing by 1. Find what number the previous term is MULTIPLIED by to get the next term. This will be b in your equation. This will be a in your equation.

4 8.5 EXPONENTIAL GROWTH FUNCTIONS x-2012 y2781243 Check to make sure that the x’s are increasing by 1. Find what number the previous term is MULTIPLIED by to get the next term. This will be b in your equation. This will be a in your equation.

5 8.5 EXPONENTIAL GROWTH FUNCTIONS 1. Make a table. 2. Graph the points. Domain: All real numbers Range: All numbers greater than zero.

6 8.5 EXPONENTIAL GROWTH FUNCTIONS 1. Make a table. 2. Graph the points. Domain: All real numbers Range: All numbers greater than zero.

7 8.5 EXPONENTIAL GROWTH FUNCTIONS

8 1. Make a table. 2. Graph the points.

9 8.5 EXPONENTIAL GROWTH FUNCTIONS 1. Make a table. 2. Graph the points.

10 8.5 EXPONENTIAL GROWTH FUNCTIONS Initial amount Growth rate Time period Growth factor

11 8.5 EXPONENTIAL GROWTH FUNCTIONS EXAMPLE: The owner of a 1953 Hudson Hornet convertible sold the car at an auction. The owner bought it in 1984 when its value was $11,000. The value of the car increased at a rate of 6.9% per year. *Must write the rate as a decimal! t=After 20 years

12 8.5 EXPONENTIAL GROWTH FUNCTIONS COMPOUND INTEREST: You put $250 in a savings account that earns 4% annual interest compounded yearly. You do not make any deposits or withdrawals. How much will your investment be worth in 5 years? *Must write the rate as a decimal!

13 HOMEWORK #4: Pg. 523: 3-7, 10, 14, 18, 22, 24, 28, 30, 38-40 If finished, work on other assignments: HW #1: Pg. 492: 4-48 even HW #2: Pg. 498: 4-44 even HW #3: Pg. 506: 4-44 even In Class Work: Scientific Notation

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