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Exponential Test Review

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  • A car is valued at $15,000 and will lose 10% of its value every year. Create an exponential equation
    y=15000(.90)^x
  • y=40(2)^x what does the 40 represent in this equation?
    y-intercept OR starting value
  • Linear or Exponential
    Linear
  • Growth or decay?
    Decay
  • What is the formula for an exponential function?
    y=a(b)^x
  • y=6(1.5)^x  What is the rate of growth?
    50%
  • Create the equation for the table
    y=5(4)^x
  • Dave is investing $8000 into an account. His account has a 3.7% interest rate that is compounded monthly. How much money will be in his account in 8 years?
    $10,750.86
  • y=1/5(2)^x Growth or decay?
    Growth
  • y=4(.88)^x what is the percent of decay?
    12%
  • Linear or Exponential?
    Linear
  • Growth or decay?
    Growth
  • Emily invests $1000 into an account that earns 3% interest per year. How much money will be in her account after 4 years?
    $1125.51
  • Linear or Exponential
    Exponential
  • Starbucks had 2 people in line to order, the people in line will double every hour. Linear or exponential
    Exponential
  • y=4(1.05)^x what is the percent growth?
    5%
  • A car that is bought for $18,700 will depreciate in value by 3% every year. Create an equation to model the situation
    y=18,700(.97)^x
  • A population of a town is currently at 123,000 people. It is set to increase by 13% every year. Create an exponential function
    y=123000(1.13)^x
  • y=40(.73)^x What is the percent of decay?
    27%
  • What is the y-intercept?
    5
  • y=5(1/2)^x  What is the y-intercept?
    5
  • Josh had 14 marbels and added 4 more to his collection each day. Linear or exponential?
    Linear
  • y=40(2)^x what does 2 represent in this equation?
    Growth factor
  • y=1.87(.5)^x growth or decay?
    Decay
  • Growth or decay?
    Decay
  • Growth or decay?
    Growth
  • Create the equation for the graph
    y=1(1/2)^x
  • Create an equation for the table
    y=4(3)^x