Exponential Functions and Percentages

The video tutorial covers exponential functions, focusing on growth and decay. It explains how to write exponential functions using the original amount and percentage changes. The tutorial provides examples of calculating growth and decay, emphasizing the importance of converting percentages to decimals. The lesson concludes with a summary of key points.

What is the primary purpose of the video resources provided by Glencoe?

• To entertain students

• To provide additional learning tools

• To replace textbooks

• To test students' knowledge

When writing an exponential function, what should you do if the scenario involves growth?

• Subtract the percentage from 100

• Add the percentage to 1

• Multiply the percentage by 100

• Divide the percentage by 100

In a decay scenario, what is the first step after identifying the original amount?

• Subtract the percentage from 100

• Convert the percentage to a fraction

• Add the percentage to 1

• Multiply the percentage by 100

How do you convert a percentage to a decimal in an exponential function?

• Divide by 10

• Multiply by 100

• Multiply by 10

• Divide by 100

In the decrease example, what is the result of subtracting 28 from 100?

• 52

• 62

• 72

• 82

What is the next step after converting the percentage to a decimal in a decrease scenario?

• Raise it to the power of t

• Add it to the original amount

• Multiply it by the original amount

• Subtract it from the original amount

In an increase scenario, what do you do with the percentage?

• Subtract it from 1

• Divide it by 100

• Add it to 1

• Multiply it by 100

What is the original amount used in the increase example?

• 1000

• 2500

• 17500

• 1500

How is the percentage expressed in the increase example?

• As a whole number

• As a decimal

• As a fraction

• As a percentage

What is the final step in writing an exponential function for an increase scenario?

• Divide the expression by 100

• Subtract the percentage from 1

• Raise the expression to the power of t

• Multiply the expression by 100