Exponent rules
Simplify
(a8b)8
a64b8
What is the value of x?
-2x + 5 + 4x = 12 + x
x=7
What is Mr. Zhu's zodiac sign?
Pisces
What kind of association presents in this situation?
Money spent monthly and bank account balance
negative association
When is a relation considered as a function?
each input value has its own unique output value
Simplify
(B4)(B-2)
B2
What is the solution of the following equation?
14+x-3x+1= -2x+10
no solution
Whose birthday was yesterday? (in class 801)
Alexander
How do you tell if a scatter plot shows a negative or positive association?
When y value increases as x increases, it is a positive association; it is a negative association if y decreases as x increases.
How do you find the y-intercept on a graph?
the place where the line intersects y-axis
Evaluate
100/102
1/100
Determine the number of solutions
4(-4-8m)+28m+4m=2(-136)
No solution
According to our most recent seating chart, who is sitting next to Ritza?
Jianna
How could you tell if an association is linear?
draw a trend line
A line passes through the point (-6, 8). Determine the equation of the line if the slope of the line is -1/2.
y= -1/2x +5
Evaluate
3-4
1/81
Tim is saving money to go on a trip for school. Each week he does extra chores and earns $45. His bank account started with $80 dollars before he started saving money. Write an equation modeling this context and explain how you were able to determine the slope and y-intercept.
y=45x+80
What is the largest organ of the human body?
The skin
What is the main difference between a two-way frequency table and a two-way relative frequency table?
In a two-way frequency table, data are entered as numbers
In a two-way relative frequency table, data are entered as percent.
Does the equation represent a linear function?
y=x2-2
No, the exponent of the variable is more than 1
What is the value of a?
(2x4)a= 32x20
a=5
What is the value of a?
15+2a+3x=3(x-1)
a=-9
Describe how photosynthesis works
Plants breathe in carbon dioxide and release oxygen
What happens to a two-way relative frequency table if it is constructed by columns?
Percentages in each column add up to 100%
Ashley took a frozen pie out of the oven to let it thaw out in time for dinner. After 2 hours, the frozen pie had a temperature of 34 degrees Fahrenheit. After 12 hours, the pie had a temperature of 54 degrees Fahrenheit. Write a linear equation that describes the relation.
y=2x+30