Linear vs Exponential Models

What function type models this graph?

• Exponential Growth

• Exponential Decay

• Linear Growth

• Quadratic

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

• Quadratic

• Linear

• Exponential 

What type of graph is this?

• Linear

• Quadratic

• Exponential

• None

Is the representation linear or non-linear? 

• Linear

• Non-Linear

Is the representation linear or non-linear? 

• Linear

• Non-Linear

Two functions are shown in the table to the right. Which of the following statements is true?

• f(x) is linear and g(x) is exponential

• f(x) is exponential and g(x) is linear

• f(x) and g(x) are both linear

• f(x) and g(x) are both exponential

• f(x)

• g(x)

• both

• neither

Given a linear function f(x)=3x and an exponential function g(x)=3^x, which function has a y-intercept at (0,0)?

• f(x)

• g(x)

• both

• neither

A flu outbreak hits your school on Monday, with an initial number of 20 ill students coming to school. The number of ill students increases by 25% per hour. How many students will be ill after 6 hours if this pattern continues?

• 76 students

• 74 students

• 4 students

• 1 student

The number of cookies in a cookie jar is decreasing over time. Which of the following functions could model c(x), the number of cookies left after x days?