Exponential Growth Model

Your starting salary at a new company is $34,000 and it increases by 2.5% each year. Which model represents what will your salary be in 5 years?

• y = 34000(1.025)⁵

• y = 5(1.025)³⁴⁰⁰⁰

• y = 34000(1.25)⁵

• y = 34000(2.5)⁵

In 2010 an item costed $9.00. The price of the item increased by 1.5% each year. Which model shows how much will that same item cost in 2030?

• y = 9(1.5)²⁰³⁰

• y = 9(1.015)²⁰³⁰

• y = 9(1.015)²⁰

• y = 20(9)^1.5

You bought $2000 worth of stocks in 2012. The value of the stocks has been increasing by 10% each year. Which model represents how much your stocks are worth today in 2020?

• y = 2000(1.10)⁸

• y = 2000(10)⁸

• y = 2000(1.10)²⁰²⁰

• y = 1.10(2000)⁸

What is 1.3% as a decimal?

• 1.30

• .130

• .013

• .0013

What is 25% as a decimal?

• 25

• 2.5

• .25

• .025

What is 50% as a decimal?

• 50

• 5.0

• .5

• .05

A piece of land was purchased for $65,000. The value of the land has been increasing by 1% annually. Which model predicts how much the land will be worth in 20 years?

• y = 65000(1.01)²⁰

• y = 650000(1.1)²⁰

• y = 650000(11)²⁰

• y = 1.01(650000)²⁰