Algebra 2 9.2.2.2

Exponential growth – as the value of x increases, the value of y __________

• Decreases

• Stays the same

• Increases

• Becomes zero

Exponential decay – as the value of x increases, the value of y __________

• Increases

• Stays the same

• Decreases

• Becomes infinite

• Year 1: $51.50, Year 2: $53.00, Year 3: $54.50

• Year 1: $51.50, Year 2: $53.05, Year 3: $54.64

• Year 1: $51.50, Year 2: $103.00, Year 3: $154.50

• Year 1: $51.53, Year 2: $52.06, Year 3: $53.09

• 4 years

• 5 years

• 6 years

• 7 years

Allen bought 1500 keys for his business. He uses 1.5% of the keys each month and does not buy more.How many keys will be left 6 months after Allen’s initial purchase?

• 1,353

• 1,370

• 1,391

• 1,491

Kamal creates the graph shown to display his proposal that the weight of a 1 pound snowball will triple every 5 minutes while it is rolling down a hill. If Kamal's proposal is true, what is the approximate weight of the snowball after 30 minutes?

• 90 pounds

• 243 pounds

• 450 pounds

• 729 pounds

Ryan bought a used car for $5,000. Each year, the car’s value decreased by 10% of the previous year’s value. Which equation represents the value of Ryan’s car, V, in terms of the number of years, t, since Ryan bought the car?

• V = 5,000 - 0.9t

• V = 5,000 - 0.1t

• 0

• 1

• 2

• 4

Suppose you deposit $1500 in a savings account that pays interest at an annual rate of 6%. No money is added or withdrawn from the account. How much will be in the account after 5 years?

• $2000

• $2011.47

• $2016.90

• $2025.00

Suppose you deposit $1500 in a savings account that pays interest at an annual rate of 6%. No money is added or withdrawn from the account. How many years will it take for the account to contain $2500?

• 10 years

• 11 years

• 12 years

• 13 years