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How can the expression 8 x + 2 y - 3 x + 6 z - 7 y + 3 z be simplified?

How can the expression 8 x + 2 y - 3 x + 6 z - 7 y + 3 z be simplified?. 11 x – 2 y + 3 z 6 x – y – z 5 x – 5 y + 9 z 11 x + 5 y – 9 z 5 x – 9 y + 9 z. After adding the x terms, which answers are still viable? Choose any that you believe are viable. A B C D E.

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How can the expression 8 x + 2 y - 3 x + 6 z - 7 y + 3 z be simplified?

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  1. How can the expression 8x + 2y - 3x + 6z - 7y + 3z be simplified? • 11x – 2y + 3z • 6x – y – z • 5x – 5y + 9z • 11x + 5y – 9z • 5x – 9y + 9z

  2. After adding the x terms, which answers are still viable? Choose any that you believe are viable. • A • B • C • D • E

  3. 2. What is 5% of ? • 2.5 • . • 5 % • . • 10%

  4. Talk with you partner about the knowledge needed to solve the previous problem.

  5. 3. In 1936, New Mexico had 18 Indian pueblos with a total population of 10,565, an increase of approximately 22% in 20 years. What was the approximate Indian population in 1916? • 2,324 • 7,635 • 8,241 • 8,659 • None of these

  6. Jot down some steps you might take if several of your students miss the previous problem.

  7. 4. If Melissa has x dimes, and the number of nickels she has is 1 more than three times the number of dimes, and the number of quarters is 1 less than twice the number of nickels, how may the number of quarters be expressed? • 3x + 1 • 3(2x – 1) + 1 • 6x + 1 • 6x • 10x + 2

  8. What high school course attends to the content in the previous question? • Algebra I • Algebra II • Geometry • None of the above • All of the above

  9. 5. A chord 16 inches is drawn 6 inches from the center of a circle. What is the length of the radius of the circle in inches? • 2 • 5 • 10 • 15 • None of these

  10. List at least two mathematical ideas critical to solving the previous problem.

  11. 6. The area of a rectangular floor is 170 square feet. The length of the floor is 3 feet less than twice the width. How many feet wide is the floor? • 8.5 • 10 • 14 • 15 • 17

  12. What content is addressed in the previous question?

  13. In the standard (x, y) coordinate plane, if the distance between points (8, a) and (a, 1) is 5 coordinate units, which of the following could be the value of a? • 5 • 3 • -3 • -4 • -5

  14. List several ways student can miss this problem.

  15. 8. If x = -2 and y = 3, then x3y + xy3 = ? • -30 • -36 • -48 • -78 • -108

  16. How able are your students to correctly substitute for a variable? • Very able • More able than not • Able • Somewhat able • Not able

  17. In the standard (x, y) coordinate plane, how many times does the graph of y = (x +1)(x - 2)(x + 3)(x + 4) intersect the x-axis? • 10 • 6 • 4 • 3 • 1

  18. I used a calculator to solve the previous problem True False

  19. 10. An object 4 feet tall casts a 3-foot shadow when the angle of elevation of the sun is . What is tan ? • . • 1 • . • 7 • 12

  20. When does your school teach right triangle trigonometry?

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