- Get a blue calculator and push 2nd, 0, 7, 1, 2.
- On your calculator, push 2nd, 0, 7, 2, 2.
- On your calculator, type -(-20) by pushing the red minus sign, the white minus sign, 2, 0, and enter. What do you notice?
- Clear your calculator's memory: push 2nd, 0, 7, 1, 2
- On your calculator, type 0- -4(5) by pushing the red minus sign, the white minus sign, 4, (, 5, ), and enter. What do you notice?
- Detton said that 6-4(2x-9)+11 simplifies to 4x+-7. What mistakes did he make? Identify and correct his errors.
Instruction: Identify key-words that help us translate verbal scenarios to algebraic equations and inequalities. Use properties of operations to solve equations and inequalities.
Exercises:
- The area of a tennis court is 2,808 square feet. The court is 2x+6 feet long and 36 feet wide. How long is the tennis court?
- Jai and Lupe plan to rent a kayak. The rental is $12 for the first hour and $9 for each hour after that. If they have $50, how many hours can they use the kayak?
- A company sets up a food booth and a game booth at the county fair. The fee for the food booth is $100 plus $5 per day. The fee for the game booth is $50 plus $7 per day. The company ran both booths for the same number of days and spent a total of $210. How many days did the company run the booths?