Quadratics
What is the vertex for the quadratic y=2(x-3)2 + 5?
(3,5)
Simplify (x4)(x3)
x7
What is the principal amount?
A = 3000(1.005)n
$3000
For right-angle triangles
What is the mode for the following set of numbers?
1,6,2,8,2,2,5,9
2
What is the step pattern for the quadratic
y=2(x-3)2 + 5?
(2,6,10,...)
What is another way to write x-5?
1/x5
What is the interest if the principal was $4500 and the final value was $5000?
$500
When do we use sine law?
ASA
SSA
What is the median for the following set of numbers?
5,8,1,3,9,3,4
4
Sketch y=(x+2)2 - 1
Teacher Check
What is the y-intercept for the graph y = 5x?
(0,1)
Evan borrows $3500 at an interest rate of 6% per year, compounded quarterly, for 3 years. How much money will he need to repay after 3 years?
$4184.66
When do we use cosine law?
SAS
SSS
What is the mean for the following set of numbers?
5,1,8,3,2
9.5
Expand y=2(x-3)2 + 5 and state the y-intercept
y = 2x2 - 12x + 23
If the cost of a trip is represented by y=10(1.1)x, what is the starting cost of the trip?
10
What is the percent depreciation of a car with a starting price of $32,000 and a value of $16,750 after 2 years?
47.66%
Two boats are leaving a harbor in different directions. Boat 1 travels 52km and boat 2 travels 67km. The angle between the first and second boat is 110 degrees. Draw the scenario.
Teacher Check
John Madden made the following survey question: "Should the government put more money towards football programs for youth?". John gave the survey out to people at a high-school football game. Is there bias and what if so what kind of bias is involved?
Sampling Bias
Factor y = -3x2 - 3x + 60
y = -3(x + 5)(x - 4)
The population of Hometown in 2010 was 8500. The population has been increasing at a rate of 5%. What would be population of Hometown be today?
17671
A bank has a savings account that pays 6% per year, compounded monthly. In order to save $7500 in 3 years, how much money do you need to invest today?
$6,267.34
Using your picture from the previous question, determine how far boat 1 and boat 2 are from each other.
97.86km
Surprise Quadratic Question!
The cafeteria's cookie sales are based on the following quadratic model: y = 2x2 - 24x + 22
1) How many cookies need to be sold in order to break even.
2) How many cookies need to be sold in order to maximize profits?
3) What is the maximum revenue?
1) 1 or 11 cookies
2) 6 cookies
3) $50