Vocabulary
Exponential Relationships
Model with Math
Growth vs. Decay %
Trivia
200
The y-intercept of an exponential functions is also called the _______________.
initial value
200
Identify the INITIAL VALUE.
A=4
(0,4)
200
Write an EXPONENTIAL EQUATION for the situation.
"Mr. Becker invested $300 for his daughter Emma's college fund. The investment doubles every year."
y=300*(2)^x
200
What is the growth or decay rate (as a percentage)?
y=-32*(1.05)^x
Growing by 5%
200
The heaviest organ in the human body.
liver
300
The base 4 in this exponential equation is also called the ____________.
y=5*(4)^x
common ratio
300
Find the common ratio.
r=1.5 or 3/2
300
You purchased a new computer for $1500. It decreases in value by about 18% each year. How much will your computer be worth in 6 years?
About $456
300
What is the growth or decay rate (as a percentage)?
y=88*(0.64)^x
Decaying by 36%
300
In what year did the first iPhone come out?
2007
400
When the common ratio is less than 1, you have exponential __________.
decay
400
Identify the COMMON RATIO.
r=2
400
DOUBLE POINTS!!
E.Coli. bacteria reproduce at a growth rate of 125% per hour. If after 4 hours there are 150,000 bacteria infecting a person, approximately how many bacteria were there initially?
Initially there were approximately 5853 bacteria.
400
What is the PERCENT of growth or decay?
y=20*(5/4)^x
25% growth
400
What country has the most active volcanos?
Indonesia
500
This blood type is known as the "universal donor" because it can be given to anyone in emergencies.
O- (O negative)