Linear Regression Mastery Check

Write the exponential regression equation for this data.

• Y = 8.16(2.7)^X
• Y = 81.6(2.7)^X
• Y = 8.16(.27)^X
• Y = 8.16(27)^X

Predict the year when Sugar Land’s population will reach 75,000.

• 2015
• 1991
• 1992
• 2010

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

• SLOPE

• RATE OF CHANGE

• Y-INTERCEPT

• GROWTH/DECAY FACTOR (COMMON RATIO)

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

• Exponential Growth
• Exponential Decay
• Linear
• None

A chemist has a 100-gram sample of a radioactive material.  He records the amount of radioactive material every week for 6 weeks and obtains the following data: How much is left after 12 weeks?

• 15
• 21
• 17
• 19

What type of function is f(x)=2(5/4)^x ?

• Exponential Growth

• Linear

• Exponential Decay

• None of the Abovee