Expressions,Equations, and Inequalities
Solve for x in 2/5x+3/4x=23
x=20
Is y=0.99(1/3)x growth or decay?
Decay
What is the degree of 2x2?
2nd Degree
is x2 linear?
No
What shape is a linear equation
a straight line
Convert to standard form=
3x2 - 9x7 -2 = 90
-9x7 - 3x2 - 2 = 90
Write an exponential function for a population of 1236000 grows 1.4% per year over the course of ten years.
1236000(1+.014)10=1406413.17
What degree is 544x4-2x2
4th degree
What is the degree of a quadratic function?
2nd degree
Factor x2 -9=9
(x-3) (x+3)
What is the vertex of y=(x-4)2+5
(4,5)
A new car that sells for $18,000 depreciates 25% each year. Solve for the price for after 4 years.
$5695.31 after 4 years
What is standard form of a quadratic equation?
Ax2 + Bx + C
What is the degree of a polynomial?
3rd degree or higher
convert x-1 into a proper exponent
1/ x
Convert y= -2x3 + 5x - 4x4 to standard form
y= - 4x4 -2x3 + 5x
Write an exponental funtion for-A population of 752,000 decreases 1.4% per year for 18 years
752000(1-0.014)18=583448.21
What degree is x?
1st degree
What is the exponent degree of a linear equation
1st degree
What's the greatest common factor of 36 and 42?
The GCF is 6
Does 7b6 / 2a3 = 42a2b4/ 12a5b-2
Yes, it does
Is y=20(1.75) growth or decay
growth
What is vertex form of a quadratic function?
y = a ( x-h) ^2 +k
What shape is a Quadratic function?
A parabola
If x = 3, what's the value of 5x3 + 3x2 - 5x -13
The correct answer is 134