Percentages, Fractions, Decimals
Write 85% as a fraction
85/100 = 17/20
A study is measuring the blood sugar of a select group of people after having them drink diet soda or regular soda. Label the independent and dependent variable.
Independent: Type of Soda
Dependent: Blood Sugar
(1/6)(1/6)= 1/36
These are not a function
(3x^2 - 6x) + (4x^2 -11x + 1) = ?
7x^2 -17x+1
What is 20% of 300?
60
Solve and graph this inequality on a number line: 4X<-12
there is an open dot at x=-3 and the line continues in the direction of -5
There are two events: 1) picking a red marble out of a bag, and then without replacing it, pick a second red marble. and 2) rolling two dice at the same time and getting the same number.
Which event is dependent and which is independent?
dependent: marbles
independent: dice
What do the m and b represent in slope-intercept form:
y=mx+b
m=slope
b= y intercept
Factor the expression: 30x^5 - 12x^3
6x^3 (5x^2 - 2)
What is the percent increase/decrease on an item that was originally $45 and is now $65
40% increase
Graph this inequality: y <= x+3
line is solid on graph, and below the graph is shaded
Here are two examples of data: How many customers are at a certain store and what your friends' favorite colors are. Which is qualitative data, and which is quantitative?
Qualitative = Favorite Colors
Quantitative = Customers
Solve: f(x) = 9x^2 -6x + 1 when x=-2
f(-2)=49
(6z + 9t^2 +7tz) - (4zt -3t^2 +5z +8) = ?
12t^2 + 3tz + z - 8
It takes Greg 16 minutes to trim 6 rosebushes. At this rate, how many minutes will it take him to trim 30 rosebushes?
80 minutes
A restaurant sells pies for $16. They start everyday with $90 in their cash register - how many pies would they need to sell to end the day with $538 in the cash register?
28 pies
There are 140 cars in a parking lot. Kelly surveys 15 cars and sees that 2 are red. Approximately how many cars in the parking lot are red?
18.67, or approximately 19 cars
if h(x) = x^3 + 11 then find the value of x
where h(x) = 38
x=3
Solve:
xy(x^3 y^5 - x^7)
x^4 y^6 - x^8 y
A toy store charges $26.88 per board game sold. The store marks up the price of each board game by 25% before selling them. What was the cost of the board game before the markup?
Padme sells $8 tickets for a concert, and has already made $22. Write an Inequality to represent how many tickets Padme needs to sell to earn at least $150 and solve it!
150<= 8x+22 where X=number of tickets
X>=16
5 students record how many minutes they read over the weekend. Their times were: 85 minutes, 90 minutes, 75 minutes, 85 minutes, and 95 minutes. What are the mean, median, mode, and range for this data set?
Mean: 86
Median: 85
Mode: 85
Range: 20
if G(x)= x^2 - 7 , then find the value of x
where G(x) = 18
x=5 or x=-5
18f^20 g^12 h^16 - 15f^4 g^8 h^24
3 f^4 g^8 h^16 (6 f^16 g^4 - 5h^8)