Percents
What is 78% as a decimal?
0.78
What is the pattern?
6, 8, 10, 12, ...
Add 2
y= 7(5)x
y=2(3)x
Growth
The value of a car can be modeled by the equation y = 23,000(0.85)x. Which of the following is false
A. The car was purchased for $23,000
B. The car's value is increasing
C. The car's value is decreasing
D. y = 23,000(0.85)5 represents the car's value in 5 years
B
What is 1.25 as a percent?
125%
What is the pattern?
7, 21, 63, 189, ...
Multiply by 3
The y-intercept is 10 and the values are quadrupling. Write the exponential equation.
y=10(4)x
y=50(0.3)x
Decay
Simplify
22 = ____
4
There are 150 bears currently. If the population increases by 7% each year, how many bears will there be in 4 years?
196-197 bears
Which sequence is ARITHMETIC?
A 5, 10, 20, 40
B 8, 4, 0, -4, -8
C 24, 12, 6, 3, 1.5
B
The y-intercept is 8 and the values are doubling.
y=8(2)x
y=9(1/3)x
Decay
Simplify
2-2 = ____
1/4
Mrs. Prime deposits $50 into an account. The account will gain 2% interest each year. How much money will she have in 10 years?
$60-$61
Tell what the sequence is (Arithmetic or Geometric) and then give the next 3 TERMS.
9, 13, 17, __, ___, ___
Arithmetic (+4)
21, 25, 29
The y-intercept is 1 and the values are being cut in half.
y = (1/2)x
Write your own exponential equation that would be growth.
y=___ ( )x
Example: y=3x
What shape is the graph of an exponential function?
The value of Mr. Cleary's car is decreasing by 12%. If he bought the car for $37,000, how much will it be worth in 8 years?
$13,306.48
Create your own geometric sequence consisting of at least four terms.
Example: 2, 4, 8, 16
Write your own exponential equation. Identify the base and y-intercept.
Example: y = 5(2)x
y-int: 5
Base: 2
Write your own exponential equation that would be decay.
y=__( )x
What did one math book say to another?
Hey what's your problem?