EOC Fast Facts 3

This is an example of:

• Linear Growth

• Linear Decay

• Exponential Growth

• Exponential Decay

Classify the model as Exponential GROWTH or DECAY.
A=10(1.01)³

• Growth
• Decay

Which of the following equations shows an initial value of 21 and is exponential growth?

• y=21(0.85)xy=21\left(0.85\right)^xy=21(0.85)x

• y=21(1.13)xy=21\left(1.13\right)^xy=21(1.13)x

• y=15(1.21)xy=15\left(1.21\right)^xy=15(1.21)x

• y=100(0.21)xy=100\left(0.21\right)^xy=100(0.21)x

In the function

 $y=0.3\left(1.08\right)^x$  , what is my growth factor?

Is this exponential growth or decay?

• Growth
• Decay

Would the following be modeled by exponential growth or exponential decay?

a population of bark beetles declining by 7% every year

• exponential growth

• exponential decay

 A flea medicine breaks down at a rate of 20% per hour. The initial dose is 60 milligrams. Which is an appropriate model?

Estimate the correlation coefficient for this scatterplot.

• A) r = 1.2

• B) r = 0.89

• C)r = 0

• D) r = -0.89

The linear regression equation for the data is  y = 1.5x + 12.  Interpret the slope of the equation.

• The slope is (0, 1.5).  It means that a pizza with 0 toppings will cost $1.50.

• The slope is 1.5.  It means that it costs $1.50 per topping.

• There are 1.5 toppings.

• There are 1.5 pizzas.

Which scatterplot suggests a linear association?

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