Exponential Functions
if Sara bought a car for 5,000 dollars and the price increases by 10 percent what is the equation?
A)5,000(1-.001)
B)5,000(1+.2)
C)5,000(1+.1)
D)5,000(1+.01)
c)5,000(1+.1)
Which two of these are NOT an exponential word problem?
A) if you have a starting value of 4 and it triples what is the equation?
B) A canoe rental service charges 20$ transportation fee plus 30$ an hour to rent a canoe write an equation
C) find the vertex 2x+4x^2+8
D)If i buy a house for 100,000 dollars and the price increases by 40%
B and C
which definition is correct for rate of growth
A)as the x value increases the y value decreases
B) as the x value increases the y value increases
B) as the x value increases the y value increases
the house is worth 9,000 dollars and the price increases by 20% what is the equation
A) 9,000(1-.002)
B)9,000(1+.02)
C)9,000(1.02)
D)9,000(1+0.2)
D)9,000(1+0.2 )
what is the formula for exponential functions?
A)y=mx+b
B)b/2a
C)change of y/change of x
D) y=ab^x
D)y=ab^x
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
the A in y=ab^x is the starting value
True or False
True
what does the x represent in y=ab^x
A)rate of growth and decay
B)starting value/y intercept
C)amount of time of change
C)amount of time of change
if you have a starting value of 5 and it doubles what is the equation?
A) 3(5)^x
B)5(2)^x
C)2(5)^x
D)5(3)^x
B)5(2)^x
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
the line on an exponential graph is called a parabola
true or false
false because parabolas are for quadratic functions
What was the title of the Spring Musical?
The Wizard of Oz
if Sophia buys a motorcycle for 600 dollars and the price depreciates by 50% whats the equation an the answer
A)600(.5)=300
B)600(1.5) =900
C)600(0.05)=30
A)600(.5)=300
simplify the equation 400(1+.4)
A)480
B)600
C)560
D)440
C) 560
How many pencils did Mrs. Madden recently buy?
320
which equation represents a starting value of 6 and a rate of change is 4.
A)4(6)^x
B)6(3)^x
C)2(6)^x
D) none of the above
D) none of the above the answer is 6(4)^x
What is Mrs. Madden's dog's name?
Archie
Which word do we use to describe an exponential function that is decreasing?
A)increases
B) decay
C) growth
D) rise
B)decay
The equation y=0.5(4)x is an exponential decay function.
True/False
False
What is the third planet from the sun?
Earth