Exponential Growth and Decay Factor vs Rate

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

In 1950, the per capita gross domestic product (GDP) of Australia was approximately $1800. Each year afterwards, the per capita GDP increased by approximately 6.7% percent. Which kind of function best models the relationship between the approximate per capita GDP of Australia and years after 1950?

• Linear growth

• Linear decay

• Exponential growth

• Exponential decay

Ngozi earns $24,000 in salary in the first year she works as an interpreter. Each year, she earns a 3.5% raise. Which kind of function best models the relationship between Ngozi's salary and years after she starts to work as an interpreter?

• Linear growth

• Linear decay

• Exponential growth

• Exponential decay

Mapiya writes a series of novels. She earned $75,000 for the first book, and her cumulative earnings double with each sequel that she writes. 

Which kind of function best models the relationship between Mapiya's cumulative earnings and sequels?

• Linear growth

• Linear decay

• Exponential growth

• Exponential decay

When the Dragons have lost their most recent game, 200 fans buy tickets. For each consecutive win the Dragons have, the number of tickets fans buy increases by a factor of 1.1. Which kind of function best models the relationship between number of tickets fans buy to Dragons games and consecutive wins?

• Linear growth

• Linear decay

• Exponential growth

• Exponential decay

A computer sells for $900 and loses 30% of its value per year.

Which kind of function best models the relationship between the computer's value and the years after it is sold?

• Linear growth

• Linear decay

• Exponential growth

• Exponential decay

At the moment a certain medicine is injected, its concentration in the bloodstream is 120 milligrams per liter. From that moment forward, the medicine's concentration drops by 30% each hour.

Which kind of function best models the relationship between the medicine's concentration and the hours after the medicine was injected?

• Linear growth

• Linear decay

• Exponential growth

• Exponential decay