dennis paid $20 for a tub of breath mints and $30 for a year’s supply of chap stick. if tax was...
TRANSCRIPT
Dennis paid $20 for a tub of breath mints and $30 for a year’s supply of chap stick. If tax was 7%, how much did Dennis pay?
Price: $20 + $30 = $50 Tax: $50 • 0.07 = $3.50 Final Cost = Price + Tax
$50 + $3.50 = $53.50
Due Friday, January 11th Remember the problem:
1. Marcella gave half her bagels and two more to:
a. The needyb. Some surfersc. Her friend Susan.
2. She had two left when she got home.3. How many bagels did she buy?
GRE 201: Identify the location of a point with a positive coordinate on the number lineGRE 301: Locate points on the number line and in the first quadrantGRE 401: Locate points in the coordinate planeGRE 402: Comprehend the concept of length on the number line*
x-axisy-a
xis
Origin
Quadrant IQuadrant II
Quadrant IIIQuadrant IV
0 1 2 3-1-2-3
-2-1
-3
123
Each number refers to the line, NOT the
space in between the lines.
Every number represents the same number of spaces in
the x and y-axes.
0 1 2 3-1-2-3
-2-1
-3
123
NO!!! Each number in both the x and y-axes must equal the
same number of spaces.
0 1 2 3-1-2-3
-2-1
-3
1
23
No, each number is attached to the line,
not the space in between the line!
0 1 2-1-2
-2
-1
1
2 Yes!!! Each number is
evenly spaced on both the x and y-axes.
0 1 2 3-1-2-3
-2-1
-3
123
No, the space between 0 and 1 is
not the same as between 1 and 2.
Coordinate points are also called ordered pairs.
They tell the location of the point on a coordinate plane.
They are written (x, y), where the ‘x’ coordinate represents the location along the x-axis and the ‘y’ coordinate represents the location along the y-axis.
0 1 2 3-1-2-3
-2-1
-3
123To locate a point, you
begin counting at the origin.
.A
You move along the x-axis first. In this
case, we moved two places to the right, or
+2.
Next, move along the y-axis. In this case, we moved three places up,
or +3.
The location of point A is therefore (2, 3)!
0 1 2 3-1-2-3
-2-1
-3
123
.
(-2, 4)(x, y)
We find -2 on the x-axis first.
Next, we move up 4
spaces on the y-axis.
Here I am!
0 1 2 3-1-2-3
-2-1
-3
123
A
I
H
G
FE
D
C
B
J
K
A: (3, 1)B: (-2, 2)C: (1, -2)D: (4, 5)E: (-4, -2)F: (4, -3)G: (-5, 4)H: (0, -4)I: (4, 0)J: (-5, 0)K: (-5, -5)