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Directions: Review writing expressions to represent situations. Identify the variables,coefficients, and constants.

1.Three times a number and 8 girls went to a concert.
2.Trey collects basketball cards. He now has 9 times as many cards as
he did when he began collecting
3.Nina has 3 dimes and 1 nickel in her pocket. She found some quarters
on the ground
4.Write a story or phrase to match the expression 2n + 4.

Sagot :

#1

  • Let the number be x
  • Three times the number means 3x.
  • 8more girls

The expression is

  • 3x+5

#2

  • He began as x
  • Now he has 9 times more

So the expression is

  • 9x

#3

  • Dimes be a
  • Nickel be b
  • Quarter be z

The expression is

  • 3a+b+z

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