The definition for Percent
A number or ratio expressed as a fraction of 100, representing a part of a whole.
Find where x is true when: (abs value) l2x+1l less than 7, using interval notation
(-4,3)
Simplify: (1-cos2(x))/sin(x)
sin(x)
Given 2x+1 x less than 0
f(x)
x2 x less than or equal to 0
Find f(-4) and f(3)
f(-4)=-7 and f(3)=9
Long divide: (2x3+5x2-3x+6)/(x+3)
2x2-x+(6)/(x+3)
The definition of Coterminal angles
angles in standard position that share the same terminal side — they end up pointing in the same direction, even if they have different measures
Solve: (3x-2)/5 less than (x+4)/2
x less than 24
A building casts a 120ft shadow with a 63 degree angle of elevation. What is the building's height?
235.5 ft
Given f(x)=4x+7
f'(x)= (x-7)/4
Verify if the inverse given is true using f(f'(x))
f(f'(x))=x 👍
A square has a side length 10cm, find the length of it's diagonal
10((square root)2) ~= 14.14 cm
The definition of a reference angle
The smallest positive acute angle between the terminal side of a given angle and the x-axis on the coordinate plane
Solve: -x2+8x-12 greater than 0
2 less than x less than 6
Solve: sin(x)= (square root 3)/2, from 0 to 2pi
pi/3, 2pi/3
Given the function: f(x)=2x-4
1. Find f-1(x)
2.Graph f(x), and f-1(x) on the same coordinate plane
1. f-1(x)= x/2 +2
x=5
An independent variable is a variable that you can change or control, while a dependent variable is one that depends on the value of the independent variable
Graph
2x-3y less than or equal to 12
Find linear equation, type of line, and where to shade the graph
y=2/3 x -4, line=solid, shade above line
Given (1/2, (square root 3)/2)
Find equivalent radians, deg, and coterminal angle
pi/3, 60 degrees, 420 and
Coterminal angles: -300 degrees or 7pi/3 and -5pi/3
g(x)= x+2
Find (f o g)(x)
2(square root(2x+2))
A 150$ jacket is on a 30% off discount and is subject to an 8% sales tax. What is the final price of the jacket?
113.4$
Difference between perpendicular and parallel lines
Parallel lines are two or more lines in the same plane that never intersect and are always the same distance apart.
Perpendicular lines are two lines that intersect at a 90° angle (a right angle)
Solve: x4-10x2+9 greater than 0
(-infinity, -3) U (-1,1) U (3, infinity)
Given y=-2sin(x - pi/2)
Find the amplitude, period, phase shift, and 5 key points.
Given f(x)= (square root 2x+1)
g(x)= (x+3)/(x-2)
Find (f o g)(x)
(f o g)(x)= square root ((3x+4)/(x-2))
A school sold 320 tickets to a play. Student tickets cost $6, and adult tickets cost $10. The total revenue was $2,480. How many student and adult tickets were sold?
a=140, s=180