Solving Absolute Value Equations
Variable Madness!
Proportions
Percents are cool too ya' know
Weighted Averages
100
Solve the absolute value equation |x+1|=4
What is x=-5 and x=3?
100
ax + bx = -c Solve for X
X = (-c) / (a + b)
100
3/7 = 9/X Solve for X
21
100
Tell whether its a percent increase or decrease: Round to the nearest percent! Original amount = 27 New amount= 30
increase of 11%
100
If tests are weighted at 70% and daily grades are weighted at 30%, what would your final average be with the following grades? Test average: 96% Daily Grade average: 90%
What is approximately 94%?
200
Solve the absolute value equation |2x-1|=15
What is x=-7 and x=8?
200
Solve for X [(x + r)/t] + 1 = 0
x = -t - r
200
-8/10 = y/5 Solve for Y
-4
200
Tell whether its a percent increase or decrease: Round to the nearest percent! Original amount = 873 New amount = 781
Decrease of 11%
200
With this grading system, and the following grades, what would your final grade be? Your grades for each are in parentheses. System: Test average: 40% (Tests: 84) Final exam grade: 25% (Final exam: 68) Homework: 25% (Homework: 90) Participation: 10% (Participation: 95)
What is 82.6%?
300
Solve the absolute value equation |10-6x|=26
What is x=-8/3 and x=6
300
Solve for X (X/P) + (X/Q) = S
X = (PQS)/(P+Q)
300
(b+3)/7 = (b-3)/6 solve for b
b= 39
300
In 1970 the US population was about 205 million. In 2007 it was about 301 million. What was the percent increase?
About 47 %
300
With this grading system, and the following grades, what would your final grade be? YOUR GRADES System: Test average: 40% Tests: 85
Final exam grade: 25% Final exam: 84
Homework: 25% Homework: 90
Participation: 10% Participation: 95
What is 87%?
400
|6x - 3| = 15
What is x = 3 or x = -2
400
Solve P = 2L + 2w for L
What is L = (P - 2w)/2
400
The solution for a when 3/8 = 15/a.
What is 40?
400
Percent of change from 40 original to 50 new.
What is 25% increase?
400
Test average: 90% (40%)
Quiz average: 80% (40%)
Final exam: 70% (20%)
The final grade is this.
What is 82%
500
|3x - 4| = 1
What is x = 5/3 or x = 1
500
Solve xyz - 4h = k for y
What is y = (k + 4h)/xz
500
The solution when t/2=6/12.
What is 1?
500
Percent of change from 72 original to 60 new.
What is 17%?
500
This is the grade you have in this class.
What is 77%?