1. Match each phrase with its variable expression. 1) Twice the sum of x and 3 2) Two less than the product of 3 and x 3) Three times the difference of x and 2 4) Twice the number x less 3 5) Two more than 3 times the number x a b e c d First, did you box the backwards words??? Self Quiz: Don’t copy, just try these 5 problems

2. Lesson 2.4 – Translating Sentences into Equations Write this TITLE down on your notes!!! Lesson 2.4 – Translating Sentences into Equations

3. What is the difference between expressions and equations? A: Equations have equal (=) signs and expressions don’t. Translate the following sentences into equations. 1) Eleven more than a number t is 23. 2) Eight times a number k is equal to 56. 3) Thirteen less m equals 6. The “is” in a sentence is usually the “=” sign Objective - To translate sentences into equations.

4. Translate the following sentences into equations. 1) Twice the sum of a number n and 5 equals 18. 2) The quotient of x and 2 added to 9 is equal to 13. 3) Six less than 5 times a number x is 39. 4) Forty-two equals 5 subtracted from the product of 7 and x.

5. Define a variable and write an algebraic equation that represents the situation. 1) The number of animals at the shelter was increased by 20 and is now 185. Let n = the original number of animals n + 20 = 185

6. Define a variable, write an algebraic equation, and solve. 1) The cost of 5 DS games at t dollars each is $100. How much was each game? Let g = the cost of each game 5 g = 100 g = 20 The cost of each game is $20. Mental Math “5 times what number will get me 100?”

7. Define a variable, write an algebraic equation, and solve. The Sears Tower is 110 stories tall. This is 8 stories taller than the Empire State Building. How many stories is the Empire State Building? Let x = the number of stories in Empire State 110=+ 8x x = 102 Number of stories in Empire State is 102. Mental Math “What number plus 8 will get me 110? Many backward words will usually use the word “than”, so watch out for it.

8. Match each sentence with its variable equation. 1) Twice the sum of 4 and x is 5. 2) Four more than the product of 2 and x is 5 3) Four times the difference of x and 2 is 5. 4) Two subtracted from the product of x and 4 is 5. 5) The product of two and x less 4 is 5. c a d e b Self Quiz: Don’t copy, just try these 5 problems

9. Homework Take out a NEW sheet of paper to start your homework. Use proper math guidelines! p.68 (#16-26, skip #20, #33-38 all) Name Period # 16) Date Remember to write the original problem, then your work, then write your answer