Real Life Exponential Functions

Consider a population of bacteria that doubles every hour. Which of the following is a property of the function describing this population growth over time?

• The domain is all real numbers, and the range is all real numbers.

• The domain is all real numbers, and the range is positive real numbers.

• The domain is positive real numbers, and the range is all real numbers.

• The domain and range are both positive real numbers.

• It is a straight line over time.

• It is a constant value over time.

Tags

CCSS.HSF-IF.C.8B

Apply exponential decay to solve: If a car loses 20% of its value each year, what fraction of its value does it retain after 3 years?

• 2

• 3

• 6

• 0

Tags

CCSS.HSF.LE.B.5

Which of the following represents exponential growth in a population of rabbits over time?

Tags

CCSS.HSF-LE.A.1A

• 4

• 6

• 8

• 16

Tags

CCSS.HSF.LE.B.5

What does the population growth of a rapidly expanding city over time most likely resemble?

• A straight line that passes through the origin

• A parabola opening upwards

• A curve that gets steeper as it moves to the right

• A curve that gets less steep as it moves to the right

Is the pictured graph growth, decay, or linear or none?  

• Exponential Growth

• Exponential Decay

• Linear

• None

Tags

CCSS.HSF-IF.C.7E

Is this exponential growth or decay?

• Growth

• Decay

Tags

CCSS.HSF-IF.C.7E

What type of function is f(x)=2(1/7)^x ?

• Exponential Growth

• Linear

• Exponential Decay

• None of the Abovee

Tags

CCSS.HSF-IF.C.8B