Units 1-4
Let f(x)=x2+5x
What is the value of f(-2)
-6
If Joe starts his day with 20 dollars, then spends a quarter of his money on food, then he works for 4 hours making 18 dollars an hour...how much money does he have at the end of the day
87$
Solve for p:
p2=121
p= 11, -11
What is the constant of the quadratic?
y=x2-2+12x
-2
What year was Vertus opened?
2014
Why would a graph with the points (2,4) and (2,-3) not be a function?
Because
x repeats or because one x value has two different y values
Tre has 200 dollars in his bank account but he spends 22 dollars a day on food. Write an equation that models how much money he will have after x days
Which of these functions is not a quadratic
a) x2
b) 12x-9x+9
c) 2x2-11
(b)
State the values of a, b, and c
y=x2-x+1
a=1
b=-1
c=1
Who is the youngest NBA MVP of all time?
Derrick Rose, 22 years old
The equation x=-7 is a....
(a) a horizontal line
(b) a diagonal line
(c) a vertical line
(c) vertical
If M is the total money you spend at a restaurant, write an equation that models how much money you spend if you buy x dollars worth of food and you tip 20%
M=x+.2x or M=1.2x
Use the Quadratic Formula to solve:
0=x2+8x+11
x=(-8+-2*sqrt(5))/2
Use factoring to solve the quadratic:
0=x2+3x-18
x=-6,3
What recording artist has the most songs with more than a billion plays?
Bad Bunny
Write the slope and y-intercept of the function:
y=9x-21
slope:9
y-int:-21
A shop sells gloves and hats. One day 25 gloves and 10 hats are sold and the store makes 150$. The next day they only sell 4 gloves and 1 hat and they make 21$. Write (then solve) a system of equations that models this situation.
150=25g+10h
21=4g+h
g=4
h=5
Solve for x:
0=x2-x-72
x=9,-8
Solve the system of equations:
y=x+1
y=x2-3x+1
x=0,4
Name 2 countries that have won a gold medal in Basketball at the olympics
USA, USSR, Argentina, Yugoslavia