Exponential functions
An exponential function must have a common ______
What is a ratio?
If a town has a population of 11500 in 2001 and a growth rate of 6%, will the population increase or decrease in 3 years?
What is increase?
What is (x+1) + (x2 -2) ?
What is x2 +x -1 ?
What is (x-1)2 ?
What is x2-2x+1 ?
What change does the +1 do to the graph of this function?
f(x) = 5x +1
What is move it up 1 ?
Is this function a growth or decay?
f(x) = 3.5 x
What is growth?
What is 18 lions?
What is (2x+4) - (3x2+2) ?
What is -3x2 + 2x +2 ?
What is (5x-7)(2x+1) ?
What is 10x2-9x -7 ?
Which does Mrs Close like better - chocolate, or anything else?
What is CHOCOLATE?
Is this a growth or decay function?
f(x) = 2(0.5)x +1
What is a decay function?
What is the rate of change (in percentage form) for a population represented by this function?:
f(x) = 3000 (1.25)x
What is 25% ?
Simplify the polynomial:
3x3 + 2x2+5x -4x2 -x +17
What is 3x3-2x2+4x +17 ?
Find the product of
(x - 2y) and (x + 5y)
What is x2 +3xy -10y2 ?
in the following function what is h ?
f(x) = 2(x+5)3 - 4
What is h = -5 ?
What is the common ratio for this table of y-values?
X Y
0 1
1 3
2 9
What is 3?
A population of penguins increases at a rate of 15% every year. In 2002 they had a population of 500, what will the population be in 2010?
What is 1530 penguins?
What is
(15x2 - 6x + 2) - (4x2 -7x +3)
What is 11x2+x -1 ?
If the side lengths of a rectangle are (x+5) and (x-1) respectively, what is an equation for the area of the rectangle?
What is x2 +4x-5 ?
How many siblings does Mrs Close have?
What is 7?
Write an exponential function for this data:
X Y
0 25
1 50
2 100
What is f(x) = 25 (2)x ?
What is the rate of change for this population?
F(x) = 200(0.85)x
Is it increasing or decreasing? Both parts must be correct for points!
What is rate of change: .15 or 15%
and it is DECREASING ?
What do you do with the negative between two polynomials when subtracting?
ex: (x+1) - (7x+2)
What is, distribute it throughout the second poynomial?
ex: x+1-7x-2
What are the factors of the following:
25x2-64
What are:
(5x+8)(5x-8) ?
What shape is an exponential graph?
What is J-shaped ?