How do you calculate the mean of a problem?
Add all of the numbers up and divide by how many there are.
solve
3X-(X-4)=18
7
what is 7x2 -3x + 2 Trinomial or a binomial
Trinomial
what's the standard form for quadratics?
y=ax2+bx+c
54
What is standard deviation?
The average distance from the mean
0
solve 3x3 X 4x5
12x8
does y=-4x2 have a maximum or minimum value?
maximum
charlie had 207 dollars to spend on nine books. After buying them he had 18$. How much did each book cost.
21$
Find the mean and the outlier.
1,2,2,4,7,11,15,15,18,27
mean= 10.2
outlier= 27
if g(x) = 2x2 -4 find g(-2)
4
solve 6x(2x+3)
12x2 +18x
a parabola upside down when a is:
negative
The length of a rectangular sign is 6 inches more than half its width. The area of this sign is 432 square inches. Write an equation in one variable that could be used to find the number of inches in the dimensions of this sign. Solve this equation algebraically to determine the dimensions of this sign, in inches.
l= 24
w=18
Find the IQR
5,5,6,6,7,7,8,8,9,9
Q1= 6
Q3=8
IQR= 2
f(x) = 2(3x)+1 whats f(2)
19
solve (3x-4) - (5x-3)
-2x-1
whats the formula to find the vertex of a parabola?
The math department needs to buy new textbooks and laptops for the computer science classroom. The textbooks cost $116.00 each, and the laptops cost 439.00 each. If the math department has $6500 to spend and purchases 30 textbooks how many laptops can they buy.
6 laptops
1,2,4,7,7,11,12,14,18,18,21,29
mean= 13.09
outlier= 29
which of the following cant be a definition of a function 1(1,5) (2,7) (2,9) 2(1,1) (2,7) (3,11) 3 (6,8) (7,0) (2,8) 4 (6,8) (1,2) (3,9)
1
(2x+3)(3x-1)
6x2+7x-3
determine the vertex of the parabola: y=5x2 -20x=13
(2,-7)
Marilyn collects old dolls. She purchased a doll for $450. Research shows this doll’s value will increase by2.5% each year. Write an equation that determines the value,V, of the doll t years after purchase. Assuming The doll's rate of appreciation remains the same, will the doll's value double in 20 years? Justify your reasoning.
no because its 737 and that is not double