Growth vs Decay Exponential Word Problems

Which of the following is an example of exponential growth?

• y = 5(.5)^x

• y = .2(.8)^x

• y = .2(6)^x

• y = 50(.9)^x

Is this exponential growth or decay?

• Growth

• Decay

What type of function is f(x) = 2^x ? 

• exponential growth 

• linear equation

• exponential decay 

• linear inequality 

Classify the graph as growth or decay

• Exponential Growth

• Exponential Decay

Classify the graph as growth or decay

• Exponential Growth

• Exponential Decay

Is this exponential growth or decay?

• Growth

• Decay

Which graph represents exponential decay?

• 
• 
• 
• 

Marburn has 80 total students in our High School. It is projected to grow at rate of 2% every year. How many students will be in the High School in 5 years from now?

• 72.3 students

• 88.3 students

• 199.1 students

• 80 students

The population of a town is decreasing at a rate of 5% per year. This year there are 10,000 people in this town, how many people will be left in 20 years from now? (round to the nearest whole number)

• 26,533 people

• 358 people

• 1 person

• 3,585 people

Middletown High School has student elections every year. Lately, the school has seen a 5% decrease in voting from election to election. If 910 students voted this year, how many will be expected to vote 8 years from now? (Round to the nearest whole number if necessary).

• 604

• 777

• 29

• 198