Algebra Ch. 7 Practice

What is the equation that best represents the graph?

• y=2^y
• y=2^x
• y=2^-x
• y=x²

Tags

CCSS.HSF.LE.A.2

Which of the following best represents the graph?

• y=2^x
• x=2^y
• y=x²
• y=2^-x

Tags

CCSS.HSF-IF.C.7E

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>0

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What are the asymptotes in the graph
y=1/x  

• x+y=0
• y=0
• x=0
• Both the x and y axis

Tags

CCSS.HSF-IF.C.7D

Classify
 f(x)=-3(1.75)^x-4+6

• Exponential Growth
• Exponential Decay

Tags

CCSS.HSF-IF.C.8B

Classify
 f(x)=4/5(.8)^x-9

• Exponential Growth
• Exponential Decay

Tags

CCSS.HSF-IF.C.8B

What is the domain and range of the function y=2^x ?

Use the graph to help!

• Domain: All Real Numbers

  Range: y>0

• Domain: All Real Numbers

  Range: y>1

• Domain: [−2 ,∞)

  Range: y>0

• Domain: (−∞ , ∞)
  Range: $y\ge0$

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the equation that best represents the graph?

• y=2^y
• y=2^x
• y=2^-x
• y=x²

Tags

CCSS.HSF-IF.C.7A

Write an exponential function to model the situation. Solve.
6) The value of a car is $18000 and is depreciating at a rate of 12% per year. What will the value of the car be after 10 years?

• V(t) = 18000(.88)^t ; $12986.98
• V(t) = 18000(.12)^t ; $12986.98
• V(t) = 18000(.88)^t ; $5013.02
• V(t) = 18000(.12)^t ; $5013.02

Tags

CCSS.HSF.LE.A.2

Write an exponential function to model the situation. Solve.
4) You invest $1500 at a rate of 3.5% compounded annually. What will the balance be after 4 years?

• B(t) = 1500(1.035)^t ; $221.28
• B(t) = 1500(1.035)^t ; $1721.28
• B(t) = 1500(.035)^t ; $221.28
• B(t) = 1500(1.035)^t ; $1628.85

Tags

CCSS.HSF.LE.A.2