Jeopardy TEST REVIEW
Unit 2 and 3
Percents #1
30% of what number is 115?
Percents
.30 ( x )
#1
115
=
.30
.30
x = 383.3
Percents #2
My first marking period grade in
Biology was a 74. My second
marking period grade was a 90.
Find the percent
increase.(round to the nearest
whole percent)
Percents
#2
change 16
=
original 74
= .216
22% increase
Percents #3
The sales tax in New York is
8.25%. If I purchase $137 worth
of items at a store in the
Palisades Mall, how much tax
must I pay and what is the final
cost of my purchase?
Percents
#3
$137 (1.0825)
total cost = $148.30
tax = $11.30
Integer Word Problems #1
Find 3 consecutive odd
integers whose sum is
225
Integer Word Problems #1
1st = n
2nd = n + 2
3n + 6 = 225
-6 -6
3n 219
=
3 3
n = 73
73, 75, 77
3rd = n + 4
Integer Word Problems #2
The sum of 3 integers is 41. The
third integer is four more than
the first integer. The second
integer is three less than two
times the first integer.
Find the three integers.
Integer Word Problems #2
1st = n
2nd = 2n -3
4n +1= 41
-1 -1
4n 40
=
4 4
n =10
1st = 10
2nd = 17
3rd = 14
3rd = n + 4
Integer Word Problems #3
The sum of the ages of Jim,
Joe, and Jane is 39 years old.
Jim is half as old as Joe and
Jane is three years older than
Jim. How old is each person?
Integer Word Problems #3
Jim =
1
n
2
Joe = n
Jane =
1
n +3
2
2n +3 = 39
-3 - 3
2n 36
=
2 2
n =18
Jim = 9
Joe = 18
Jane = 12
Inequalities
#1
Solve the inequality below
3x -8 ³ 7x + 32
Inequalities
3x - 8 ³ 7x + 32
+8
+8
3x ³ 7x + 40
-7x
- 7x
-4x 40
³
-4 -4
x £ -10
#1
Inequalities
#2
Solve the inequality below
4
x - 2 < -11
3
Inequalities
4
x - 2 < -11
3
+2 +2
æ 3ö 4
æ3ö
ç ÷ x < -9 ç ÷
è4ø 3
è4ø
-27
x<
4
#2
Inequalities
#3
Solve the inequality below
-7 £ -3x + 2 <14
Inequalities
-7 £ -3x + 2 < 14
-2
-2
-2
-9
-3x
12
£
<
-3
-3
-3
3 ³
x > -4
#3
Absolute Value Equations
x + 6 = -17
#1
Absolute Value Equations
#1
x + 6 = -17
NO SOLUTION
absolute value is a number 's positive dis tan ce
from 0 which can never equal a negative number
Absolute Value Equations
#2
If x < 0 and y is a multiple of 3,
what is x · y
x +3 = 5
y - 4 =14
Absolute Value Equations
x+3 = 5
#2
y - 4 = 14
x+3= 5
x + 3 = -5
y - 4 = 14
y - 4 = -14
x=2
x = -8
y = 18
y = -10
x = -8 and y = 18
x · y = -144
Absolute Value Equations
Solve for x
4 x + 2 - 7 =13
#3
Absolute Value Equations
4 x + 2 - 7 = 13
+7 +7
4 x + 2 20
=
4
4
x+2 = 5
x+2 =5
x=3
x = -7
x + 2 = -5
#3
Absolute Value Inequalities
#1
Solve and graph on a number line
x -8 £13
Absolute Value Inequalities
x - 8 £ 13
x - 8 £ 13 and
+8 +8
x - 8 ³ -13
+8 +8
x £ 21 and x ³ -5
-5
21
#1
Absolute Value Inequalities
Solve and graph on a number line
x -10 ³ -20
#2
Absolute Value Inequalities
#2
x -10 ³ -20
All real numbers : absolute value is a number 's
positive dis tan ce from 0 which is always
greater than a negative number
-10
30
Absolute Value Inequalities
Solve and graph on a number line
-2x + 5 £ 39
#3
Absolute Value Inequalities
-2x + 5 £ 39
-2x + 5 £ 39 and - 2x + 5 ³ -39
-5 -5
-5 -5
-2x -44
-2x 34
³
and
£
-2
-2
-2 -2
x ³ -17 and x £ 22
-17
22
#3
Random
#1
Set A is the set multiples of 4 from 120 inclusive
Set B is the set of factors of 28
Find
Random
#1
Random
#2
ISOLATE THE ABSOLUTE VALUE INEQUALITY
THEN SOLVE AND GRAPH
-7 x +12 + 25 £11
Random
-7 x +12 + 25 £ 11
#2
x +12 ³ 2
- 25 - 25
x +12 ³ 2
-7 x +12 -14
£
-7
-7
x +12 ³ 2
or x +12 £ -2
x ³ -10 or x £ -14
-14
-10
Random #3
The class average on a test is 82%.
I would like to set up a meeting
with any student who DID NOT
score within 12 points of the class
average.
Write an absolute value inequality
that describes this situation and
solve
Random
#3
x - 82 ³ 12
x - 82 ³ 12
or x - 82 £ -12
x ³ 92 or x £ 70
70
92