Unit 9 Review: Exponential Functions

The average attendance at a local high school this year was 950 students.

Each year, the attendance decreases at a rate of 0.5% per year.

What is the function models the average attendance of the local high school over x years?

[Write you answer in the form: a(b)^x , where a and b are real numbers.]

Mathematical Equivalence

ON

Tags

CCSS.HSF.LE.A.2

The population of bacteria in a Petri dish is increasing exponentially.

At noon, there were 32,600 bacteria in the dish.

An hour later, there were 34,556 bacteria.

Write a function in the form a(b)^x to model this situation.

Mathematical Equivalence

ON

Tags

CCSS.HSF.LE.A.2

The equation f(t) = 6000(0.9975)^t models the value of a car over time, t.

In the equation, what does the 6000 represent?

• The number of years the car has been owned

• The current value of the car

• The original price of the car

• The annual percent decrease in value of the car

Tags

CCSS.HSF.LE.B.5

We know if we see a table, M-4-1-3 is for linear functions, M-4-1-6 is for quadratic functions, but what was exponential in the spreadsheets?

(a)  

• B
• A
• C
• D

Tags

CCSS.HSF.LE.A.2

We focus on which axis when talking about domain?

(a)  

• A
• B
• C
• D

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

The exponential function is y=ab^x what does a represent and what does b represent? Is the function growing or decaying?

• A

• B

• C

• D

Tags

CCSS.HSF.LE.A.2

In an exponential function, what does the 'a' represent? 

• SLOPE
• RATE OF CHANGE
• Y-INTERCEPT
• COMMON RATIO

Tags

CCSS.HSF.LE.B.5

What is the x-intercept of the exponential function? 

• (0,1)
• (0,0)
• There is not one

Tags

CCSS.HSF-IF.C.7E

This is the horizontal line which the values of the function cannot fall below :

• Asymptote

• Growth Factor

• Axis of symmetry

• Curve

Tags

CCSS.HSF-IF.C.7E

What is the y-intercept of the function?

• 2
• 3
• 1
• -2

Tags

CCSS.HSF-IF.C.7E