Algebra Regents Functions

• (-4,-1) because then -4 would have two outputs (2 and 1)

• (1, - 4) because there is no x = 1

If f(x) = 4x + 5 , what is the value of f(-3)?

• -2

• -7

• 17

• 4

• 54

• 36

• 0

• -18

What is the initial value of the situation represented by f(x)=0.05(2)^x?

• 0.05

• 2

• 0.1

• 1

Is the following function and example of decay or growth?

f(x)=2(0.85)^x

• Exponential Decay

• Exponential Growth

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

• SLOPE

• RATE OF CHANGE

• Y-INTERCEPT

• COMMON RATIO

Your shiny new boat cost $7650.  The depreciation for your boat is 14% per year. Estimate the value of your vehicle in 3 years. What is the equation that models this problem?

• y= 7650(.14)³

• y= 7650(.86)³

• y= 7650(1+.86/1)^3*1

What is the initial amount.

• 5000

• 1.2

• I don't know

What is the growth rate of this model?

• 12

• 112%

• 12%

• 5000

x is (select all that are correct

• the independent variable

• the input

• time

• .955