One-Step Equations
Two-Step Equations
Multi-Step Equations
Reading Weather Maps
Word problems
1
4 = -8 + x
x= 12
1
6x – 13 = 11
x= 4
1
Solving Equations
x + 3 + 3x = 7
x = 1
1
Which letter and color shows 'low pressure' on the map?
The Red Ls.
1
John makes $12.50/hour gardening. He earned $275 this week. Write the equation for figuring out his hours worked
12.5x = 275
x = 22 hours
2
(x/2) =-8
x= -16
2
3x + 5 = 14
x= 3
2
Solving Equations
5 + 5x - 1 = 29
x = 5
2
What do we call a front where cold and warm fronts meet and it stays still signified by the blue and red alternating lines.
A Stationary Front.
2
A father is buying cheeseburgers for his children. Each cheeseburger costs $3.50. He spends $17.50 on cheeseburgers. How many cheeseburgers did he buy?
What is the equation for the number of cheeseburgers he bought.
3.50x = 17.50
x = 5
3
3 = -2 – x
x= -5
3
-10x + 4 = 74
x = -7
3
Solving Equations
18 = 2(x + 4)
x = 5
3
How many fronts are shown on the map?
Four
3
A plant is 14 inches tall. If it grows 3 inches per year, how many years will it take to reach a height of 38 inches?
What is the equation for the number of years it will take to grow?
14 + 3x = 38
x = 8 years
4
5x = -80
x= 16
4
x / 2 - 4 = 0
x = 8
4
Solving Equations
14 = 2a + 6 + 2
a= 3
4
Looking at Wisconsin, we see ice. Is this ice following a warm front or a cold front according the the map?
A Cold Front.
4
Ryan has one less than four times the number of songs on his iPod that Olivia has. In total, they have 469 songs. How many songs does Olivia have?
What is the equation used to solve for the number of songs Olivia has?
n + 4n-1 = 469
n = 114
5
(x/2)=10
x= 20
5
2x - 7 = 21
x = 14
5
Solving Equations
-21 = 7(5k - 8)
k = 1
5
In which direction are the fronts on the map mostly moving? South or North? How can you tell?
They are mostly moving south. This is observable because the arrows on the cold front point in the direction the front is headed.
5
The sum of two consecutive integers is 113. Find the integers.
Find the equation used to find the integers.
x + x + 1 = 113
x = 56, 57 is the next number