Exponential Functions - PreCalc

What is the equation that best represents the graph?

• y=2^y
• y=2^x
• y=2^-x
• y=x²

What is the domain and range of the function y=2^x ?
Use the graph to help!

•  Domain: −∞<x<∞
  Range: y>0
• Domain: −∞<x<∞
  Range: y>1
• Domain: −2<x<∞
  Range: y>0
• Domain: −∞<x<∞
  Range: −∞<y<∞

Given y=3^x determine the y-intercept 

• (0,1)
• (0,3)
• No Y-intercept
• y=1

Which of the following is an increasing exponential function whose y-intercept is 50?

• y = 50(.05)^x
• y = 50x - 4
• y = (2)^x + 50
• y = 50(1.4)^x

• 96

• 192

• 30

• 24 

Classify
 f(x)=-3(1.75)^x-4+6

• Exponential Growth
• Exponential Decay

Classify
 f(x)=4/5(.8)^x-9

• Exponential Growth
• Exponential Decay

What is the horizontal asymptote for the graph of 
f(x)=-2(3)^x+4-8 ?

• y=8
• y=-8
• x=-8
• x=-4

What is the horizontal asymptote for the graph of 
f(x)=13(0.5)^x-6 ?

• y=0.5
• y=13
• y=6
• y=0

• (3,0)

• (1/2, 0)

• (0,0)

• (0,3)