Equivalent
Expressions
Expressions
exponential functions
Exponential function
Linear and Nonlinear
Mode , Range , Mean, and median
100
which is equivalent to (3x-8)(4x+2)?**exponents **
a.12x2^+16
b.12x2^-16
c.12x2^-6x+16
d.12x2^-26x-16
D.12x^{2}-26x-16
you can use demos(key in the answer choices) and it has to be equivalent to the expression above.
100
consider the sequence 3,6,12,24... what pattern do you notice in the sequence?
each term is the product of two
multiplying 2
100
Label y=a-bx
a=starting point
x=time period
b=growth factor
100
Are these relations represent a function?
{(-5,2),(-6,1),(-6,2),(3,6),(-6,4)}
NO
"X" can not repeat
-6 repeated three time
100
What's the mode of the data set?
23 , 56 , 78 , 99 , 109 , 78 , 34 , 25 , 89, 56 , 84
86
To find the range, subtract the smallest number from the largest number. In this case we get 109 from 23
200
Select all of the expressions that are equivalent to 7x-4x(2x-5)+9(2x^{2}-5x+3)**exponents **
a.10x2- 8X- 2
b.10x2- 18x + 27
c.24x2- 60x + 27
d.2(5x2- 4x + 1)
e.3x (2x - 5) + 18x2- 45x + 27
f.5x(2x - 9) + 27 (x+1)
B .10x2- 18x + 27
F.5x(2x - 9) + 27 (x+1)
you can use demos(key in the answer choices) and it has to be equivalent to the expression above.
200
consider the sequence 3,6,12,24... what pattern do you notice in the sequence?
Is this Geometric or Arithmetic sequence
- Geometric
its multiplying by 2
it can be division or multiplication
200
The value of Jasmine's account is $500 to begin with , but grows 5% during each year after that.
Write a function that models the value in dollars of Jasmine's account..
D(x)= 500(1.05)x
add "1" to ".05"
Remember =
a=starting point
x=time period
b=growth factor
200
FREE POINT *definition *
The domain of a function is the set of values that are allowed to plug into the function.
FREE POINT *definition *
The domain of a function is the set of values that are allowed to plug into the function.
200
What's the mean of the data set?
23 , 56 , 78 , 99 , 109 , 78 , 34 , 25 , 89, 56 , 84
66.4
The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.
300
which is equivalent to 6-(w+5)2+4w2+3w**exponents **
a.3w3+3w-5
b.3w2-7w-19
c.3w2-3w+17
d.3w2+13w+21
b.3w2-7w-19
you can use demos(key in the answer choices) and it has to be equivalent to the expression above.
300
What function best represents the sequence 10,13,16,19,22
a. a(n)=7+2n
b. a(n)=10+3n
c. c(n)=7+3n^
d. d(n)=10+3n^
b. a(n)=10+3n
use calculator
key everything in "y="
300
The value of Kasia's business sale is $700 to begin with , but grows 7% during each year after that.
Write a function that models the value in dollars of Kasia's account..
D(x)= 700(1.07)x.
add "1" to ".07"
Remember =
a=starting point
x=time period
b=growth factor
300
What is considered as not a function?
A function is a relation between domain and range such that each value in the domain corresponds to only one value in the range.
300
What's the median of the data set?
23 ,25,34,56,56,78,78,84,89,99,109
78
The median is the middle value when a data set is ordered from least to greatest.
400
which is equivalent to (4a-b)(a2-3ab-7b2) **exponents **
a.4a3-11a2b-31ab2+7b3
b.4a3-11ab
c.4a3-13a2b-31ab2-7b3
.11ab+45+ab3
d
c.4a3-13a2b-31ab2-7b3 **exponents **
you can use demos(key in the answer choices) and it has to be equivalent to the expression above.
400
8,10,12,14,16,18 ...
Is this Geometric or Arithmetic sequence
Is it adding two or multiplying two
Arithmetic
adding two
Arithmetic is simply adding or subtracting..
400
A new car costs $25,000. The value decreases by 16% each year.
write an exponential model to represent the cars value after t years.
y=25000(.84)t
workout 25000(1-.16)
y=25000(.84)t
400
Are these relations represent a function?
{(-6,2),(-7,1),(8,2),(9,6),(6,4)}
Yes
The "x" doesn't repeat .
400
What's the mode of the data set?
23 ,25,34,56,56,78,78,84,89,99,109
78 and 56
The mode is the value that appears most frequently in a data set
500
which is equivalent to 2m2-162m?**exponents **
a.2m(m-3)4
b.(2m3+18m)(m2-9)
c.2m -m2+8
d.m+9-m2
b.(2m3+18m)(m2-9)**exponents **
you can use demos(key in the answer choices) and it has to be equivalent to the expression above.
500
What is an Arithmetic Sequence?
What is a Geometric sequence?
Arithmetic is adding / subtracting
Geometric is multiplying/division
500
A designer sandals sells for $700 and loses 30% of its value per year
write a function that gives the sandals's value , v(t), t years after it is sold
V(t)= 700(0.7)t
Subtract "1" to ".0.30"
Remember =
a=starting point
x=time period
b=growth factor
500
Are these relations represent a function?
{(9,7),(-7,8),(9,4),(9,7),(6,8)}
NO
The "x" value repeats
"9" repeats two times
500
Describe a scatter plot ..
- Use a scatter plot when you have two variables that pair well together.