Unit 1 & 2
Solve for x
2x+3=7
x=2
Provide an example of a RATIONAL number
ANSWERS VARY
Simplify the following:
(6a+1)+(-a-4)
5a-3
Consider the function for the investment in a savings account. What does 15000 mean in this situation?
f(x)=15000(1.08)^t
The initial value
Find the mean of the data set
(2, 5, 8, 10, 2, 1, 18)
6.57
Simplify the expression
6x + 3(2x-1)
12x-1
Provide an example of a IRRATIONAL number
ANSWERS VARY
Simplify the following:
(1+2x^2-x)-(4x^2-5+2x)
(-2x^2-3x+6)
Consider the function for the investment in a savings account. What is the rate of decrease on the function?
f(x)=15000(0.98)^t
0.02 or 2%
Find the median of the data set
(2, 5, 8, 10, 2, 1, 18)
5
Write the following as an algebraic expression:
The sum of a number and 5 is 10
x + 5 = 10
Always, sometimes or never true:
The sum of a rational number and a rational number is RATIONAL
Always True
Simplify the following:
(x+2)^2
x^2+4x+4
Consider the function for the investment in a savings account. How much money would be in the account after 15 years?
f(x)=15000(1.08)^t
$47,582.54
Find the IQR of the data set
(2, 5, 8, 10, 2, 1, 18)
8
Evaluate g(2) for the function below:
g(x)= 5x-1
g(2)=9
Always, sometimes or never true:
The product of a rational number and a irrational number is IRRATIONAL
Sometimes True
Simplify the following:
(x+4)(x-3)
x^2+1x-12
Alex opened an account with $575 that appreciates at a rate of 5% yearly. Write an equation that he could use to predict the amount of money that would be in his account.
f(x)=575(1.05)^t
Give an example of a correlation coefficient that would be MODERATE and NEGATIVE
Answers Vary (Between -0.7 and -0.5)
How many solutions does the equation below have?
5x -4 =10x + 3
One Solution
Would the following be rational or irrational?
sqrt(3)*sqrt(3)
Rational
Simplify the following:
(2x-6)(3x+2)
6x^2-14x-12
Alex opened an account with $588 that depreciates at a rate of 7.5% yearly. Write an equation that he could use to predict the amount of money that would be in his account.
f(x)=588(0.925)^t
Find the range of the data set
(2, 5, 8, 10, 2, 1, 18)
17