1. Using Equations to solve problems
Chapter 2
Section 2.4

2. objective
Students will use the five step plan to solve word problems

3. Plan for solving word problems
Read the problem carefully
Choose a variable
Reread the problem
Write an equation
Solve the problem
Check your result

4. The sum of 38 and twice a number is 124. Find the number.
example
The sum of 38 and twice a number is Find the number.

5. example
Lynne took a taxicab from her office to the airport. She had to pay a flat fee of $2.05 plus $.90 per mile. The total cost was $ How many miles was the taxi trip?

6. example
The perimeter of a trapezoid is 90 cm. The parallel bases are 24 cm and 38 cm long. The lengths of the other two sides are consecutive odd integers. What are the lengths of these other two sides?

7. example
Burt’s Burger Barn sold 495 hamburgers today. The number sold with cheese was half the number sold without cheese. How many of each kind were sold?

8. questions

9. assignment
Worksheet