How would you find the x value of a coordinate 26 degrees around the unit circle?
cos(26)
What is the DEGREE of 2x4+9x3-5x2+6
4 (Degree is the highest exponent power in an expression)
(2x-5)(3x+2)
6x2-11x-10
Simplify: (3x2)(-2x3)
-6x5
If we go 1/4 of the way around the unit circle, how far did we go in radians?
pi/2 radians or 1/2 pi
What is the coefficient of the following term?
15x3y7
15 (coefficient is the number out front)
How do you find the vertical shift and the amplitude of a sin or cos graph?
Vertical shift: average or middle of highest and lowest point
Amplitude: distance from the top/bottom to the middle
Write an example of a polynomial with 4 terms and degree of 3.
Check answers...
If the length classroom is x+5 ft and the width of the classroom is x-4 ft. What is the area of her classroom? Area = lw
x2+x-20 square ft