2018-10-16

I can translate word problems into equations and inequalities: part 2.

Starter:
  1. Get a blue calculator and push 2nd, 0, 7, 1, 2.
  2. On your calculator, push 2nd, 0, 7, 2, 2.
  3. On your calculator, type -(-20) by pushing the red minus sign, the white minus sign, 2, 0, and enter. What do you notice?
  4. Clear your calculator's memory: push 2nd, 0, 7, 1, 2
  5. 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?
  6. Detton said that 6-4(2x-9)+11 simplifies to 4x+-7. What mistakes did he make? Identify and correct his errors.
Retake yesterday's Two-Question Quiz. Then take today's Two-Question Quiz.

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: 

  1. 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? 
  2. 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?
  3. 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?