Understanding exponential and logarithmic functions

What is the pattern for this table?

• +5

• -5

• x2

• +2

Which is an exponetial growth (increasing exponential) equation?

• $y=2^x$

• $y=\left(\frac{1}{2}\right)^x$

• $y=x^2$

• $y=x$

Identify an example of exponential decay in the real world.

• Rising of the sun

• Decay of radioactive materials

• Melting of ice

• Growth of a plant

The table of a Exponential Function has numbers that show:

• A constant pattern of adding and subtracting

• Symmetry

• A constant pattern of multiplying

• Dirty Diapers

What is the pattern you see in this table?

• Add 1

• Multiply by 3

• Add 8

• Divide by 3

Does this table represent a growth or a decay?

• Growth

• Decay

• Bro... I don't even know

• Neither

What function type models this graph?

• Exponential Growth
• Exponential Decay
• Linear 
• None of the above

Which of the following equations represents exponential decay?

• y = ¹/₂(3)^x

• y = 3(¹/₂)^x

• y = 0.8x

An elevator descends at a rate of 10 feet per second.

• Exponential Growth

• Exponential Decay

• Does not represent an exponential function

If you are given the following tables, how would you fill in the missing values?

• Find the common difference for the linear table and use that to find the other y values and for the exponential table find the first difference and use that to find the other y values.

• Use the second difference to find the linear table values and the third difference to find the exponential table values.

• Find the first difference for the linear table and use that to find the other y values and for the exponential table find the common ratio and use that to find the other y values.

• Give up.