Solve
Exponential or Linear
Write a Function
Formulas
100
Simplify the equation 400(1+.4)
560
100
Exponential or Linear?
If i buy a house for 100,000 dollars and the price increases by 40%
Exponential
100
Write an equation for the graph.
y=100(0.95)^x
100
What does b represent in
y=ab^x
A)starting value
B) the exponent
C) the rate of growth/decay
C) rate of growth and decay
200
Solve y=-2(3)x for x=3
-54
200
The a in
y=ab^x
is the starting value
True or False
True
200
What is equation for the table
X:0,1,2,3
y: 1/3,1,3,9
A)y=1/3(3)x
B)y=3(1/3)x
C) y=3(1)x
y=1/3(3)^x
200
The line on an exponential graph is a straight line.
true or false
false
300
If you have a starting value of 5 and it doubles what is the equation?
A)y= 3(5)x
B)y=5(2)x
C)y=2(5)x
D)y=5(3)x
B)y=5(2)x
300
Which one is an exponential function
Function A)
x:0,1,2 ,3
y:2,4,6,8
Function B)
x:0,1,2,3
y:3,9,27,81
function B
300
If Sara bought a car for 5,000 dollars and the price increases by 10 percent what is the equation?
y=5,000(1+0.1)x
300
The a in
y=ab^x
acts as the y-intercept
Yes or no
yes because the a acts as the starting value ot the y intercept in the equation
400
You deposit $700 in an investment account that earns 9% annual interest compounded monthly. What is the balance of the account after 4 years?
$721.24
400
if Sophia buys a motorcycle for 600 dollars and the price depreciates by 50%, what is the equation?
A)y=600(.5)x
B)y=600(1.5)x
C)y=600(0.05)x
A)y=600(.5)x
400
If the starting value is 6 and its quadruples. Write an equation.
y=6(4)x
400
What does the x represent in y=abx
A)rate of growth and decay
B)starting value/y intercept
C)the exponent
C) the exponent
500
The value of a car is $24,500. It loses 12% of its value every year. Estimate the value of the car after 5 years.
$12,929.43
500
Which words helps you find if the percent is going down in the equation?
A)increases
B) decay
C) growth
D) decrease
B)decay and D) decrease
500
The house is worth 9,000 dollars and the price increases by 20%. Write an equation.
y=9,000(1+0.2)^x
500
What is the formula for exponential functions?
y=abx