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55 + 11n

The cost in dollars of a school banquet is 55 + 11n , where n is the number of people attending. What is the cost for 75 people ?. 55 + 11n. 55 + 11 × 75. MULTIPLY FIRST!!. 55 + 825. $880. 2. Given the expression , what is the value of the expression when y = 8?.

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55 + 11n

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  1. The cost in dollars of a school banquet is 55 + 11n , where n is the number of people attending. What is the cost for 75 people? 55 + 11n 55 + 11 × 75 MULTIPLY FIRST!! 55 + 825 $880

  2. 2. Given the expression , what is the value of the expression when y = 8? MULTIPLY FIRST!! 4 × 8 - 6 32 – 6 2 26 2 13

  3. 3. Hank ordered chicken dinners for himself and two friends. The bill came to a total of $30.40. He used the expression , where c represents the cost of the dessert he ordered, to find the cost of each chicken dinner. If his dessert cost $2.80, how much did each chicken dinner cost? 30.40 – 2.80 3 27.60 3 $9.20

  4. 4. 6b -7for b = 11 6b - 7 6×11 - 7 MULTIPLY FIRST!! 66 - 7 59

  5. 5. Use the Distributive Property for: 3(5 + 6) 3(5 + 6) + 18 15 33

  6. 6. Use the Distributive Property for: -2(x + 7) -2(x + 7) - 14 -2x Negative 14 means the addition sign needs to change to a subtraction sign!

  7. Write vertically without the parenthesis 7. Add the expressions: (2x + 9) + (5x - 8) 2x + 9 Box in the terms + 5x - 8 7x + 1 ADD

  8. 5x + 20 Distributive Property 8. Add the expressions: 5(x + 4) + (-4x + 6) Write vertically without the parenthesis 5x + 20 Box in the terms + -4x + 6 x + 26 ADD

  9. Write vertically without the parenthesis 9. Subtract the expressions: (2x + 11) - (-x + 2) Change signs of whole bottom row since it’s a subtraction problem 2x + 11 Box in the terms - -x + 2 3x + 9 ADD

  10. Write vertically without the parenthesis 10. Subtract the expressions: (2x + 15) - (-7x + 6) Change signs of whole bottom row since it’s a subtraction problem 2x + 15 Box in the terms - -7x + 6 9x + 9 ADD

  11. Write vertically without the parenthesis 11. Subtract the expressions: (-4x - 10) - (5x - 1) Change signs of whole bottom row since it’s a subtraction problem -4x -10 Box in the terms - 5x - 1 -9x - 9 ADD

  12. 1 × 18 1 × 30 12. Find the Greatest Common Factor: 30x and 18x 2 × 9 2 × 15 3 × 6 3 × 10 x 5 × 6 x Don’t forget the x’s are factors, too! Find common factors Greatest common factor is 6 AND the x. 6x

  13. 1 × 36 1 × 12 13. Find the Greatest Common Factor: 12 and 36m 2 × 18 2 × 6 3 × 12 3 × 4 4 × 9 Find common factors 6 × 6 m Greatest common factor is 12

  14. First find the GCF Divide each term by the GCF 14. Factor the expression: 8x + 32 8x32 8 1 32 4 2 16 4 8 8x + 32 8x ÷8 32 ÷8 x 4 8(x + 4) GCF

  15. Box in the terms 15. Combine like terms: -2x + 8 + 6x - 12 8 + -12 -2x + 6x Add like terms 4x - 4 Negative 4 means the addition sign needs to change to a subtraction sign!

  16. 16. Sarah’s checking account has $-15.48. She will deposit her $1,090.52 paycheck today. She then has to write a $725 check for rent. How much money will she have left for the weekend? -15.48 + 1,090.52 1075.04 - 725.00 $350.04

  17. 17. Mrs. Jackson is an usher at the movie theater. Every minutes she lets people into the movie theater. If she lets people in for minutes, how many times will she let people into the theater? So, this means….find out how many groups of 3 ¼ fit into 12 ½ 12 ½ ÷ 3 ¼ 25÷ 13 2 4 = 3 11 13 times = 25× 4 2 13 = 100 26

  18. 18. Marcus needs to drink 45 ounces of water a day. His 10-ounce glass is full of water. How many ounces of water does he have? So, this means….¾ of the glass is full of water ¾ × 10 3 × 10 4 1 = 30 4 = 7 ½ oz

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