1. Write Two-Step Equations
Lesson #3
Pg. 285

2. What You’ll Learn Translate sentences into Equations
Solve two-step equations

3. Real World Link
You want to attend a two-week robotic day camp that costs $ Your parents will pay the deposit of $ if you pay the rest in weekly payments of $15.00.
Complete the Table
Payments
Amount Paid
(0) = $400.00 1
(1) = $415.00 2 3 4

4. Write an Equation
Write and solve an equation for the amount of weeks (payments) it will take to pay off the rest.
Payments
Amount Paid
(0) = $400.00 1
(1) = $415.00 2 3 4

5. Steps to Writing Two-Step Equations
There are three steps to writing a two step equation
Words
Describe the situation, Use most important words
Variable
Define a variable to represent the unknown quantity
Equation
Translate your verbal model into an algebraic equation

6. Math Words IS OF There are more, but these are very important
Means equals OF
Means Multiplication
There are more, but these are very important

7. Example Eight less than three times a number is -23. Words Variable
Equation

8. Example Thirteen is seven more than one-fifth of a number. Words
Variable
Equation

9. Example
You buy 3 books that each cost the same amount and a magazine, all for $ The magazine costs $ How much is each book?
Words
Variable
Equation

10. Example
A personal trainer buys a weight bench for $ and w weights for $24.99 each. The total cost is $ How many weights were purchased?
Words
Variable
Equation

11. Homework
Take Home Quiz