To Start
Is it growing?
Time flies
It's growing
It's not
100
What is the starting value in the following equation: y=C(1+r)^t
C
100
What is the growth rate in the following equation? y=C(1+r)^t
r
100
What letter represents time in the following equation? A=P(1+r)^t
t
100
A pair of gold earrings you bought 5 years ago for $100 increases in value by approximately 2% each year. What is the value of the earrings now?
$110
100
You buy a new laptop for $3,000. The computer depreciates in value by 40% each year. What will be the value of the computer in 5 years?
$233
200
A gold necklace you bought in 2000 for $500. It has increased in value by approximately 2% each year. What is the initial value of the necklace?
$500
200
A home purchased in 1999 for $125,000, has increased in value by approximately 1.5% each year. The current value of the home is $156,250. What is the growth rate?
1.5%
200

You have deposited $500 in a bank account that pays 8% interest compounded yearly. After 6 years, you have $793. What is the time?

6 years

200
An investment of $10,000 increases at a rate of 10% compounded annually. Find the value of the investment after 10 years.
$26,000
200
A $12,000 car depreciates at a rate of 5% each year. What will be the value of the car in 10 years?
$7,185
300
An initial population of 70 deer doubles each year. In 10 years the population is 71,680. What number represents C?
70
300
In the equation: y=C(1-r)^t What does the r represent?
The decay rate or rate of decay.
300
You bought a car for $5,000. It depreciates in value by approximately 3% each year. After 2 years, your car is worth $4,704.50. What number would be represented by t in the equation: y=C(1-r)^t
2
300
A model train was bought 20 years ago for $300. It increases in value by about 2.5% each year. What is the value of the model train today?
$491
300
You drink a cup of espresso with 160mg of caffeine. Each hour, the caffeine in your system decreases by about 15%. How much caffeine is in your system after 3 hours?
98 grams
400
An iPod cost $200 in 2005. It has depreciated in value by about 5% each year. The current value of the iPod is $126. What was the initial amount of the iPod?
$200
400
Bacteria double every hour. The starting amount of bacterial cells in a petri dish was 6. In three hours the amount had grown to 48. What is the growth rate?
100% or 1
400

A house was bought in 1972 for $20,000. It has increased in value by approximately 3.7% each year. Today, in 2020 the house is worth $91,989. What number would be used for time (t)?

48

400
An initial population of 50 crickets triples each year for 5 years. What is the population of crickets now?
12,150
400
An adult takes 200mg of Tylenol. Each hour, the amount of Tylenol in the person’s system decreases by about 40%. How much ibuprofen is left after 2 hours?
72mg
500
In the equation: y=C(1+r)^t What does C equal?
The starting amount (initial value).
500

In the equation: y=C(1+r)^t What does the (1+r) represent?

The growth factor. (b)

500

Your grandfather bought your grandmother's engagement ring in 1947 for $500. It has increased in value by approximately 1.33% each year. Today in 2020 the ring is valued at $1,212. What number would be used for time (t)?

73

500
A piece of land was bought for $70,000 in 1988. If the value of the land increases by approximately 3.7% each year, what is the value of the land today?
$179,900
500
A golf tournament starts with 150 participants. During each round, one quarter of the players are eliminated. How many players remain after 10 rounds?
8
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