Understanding Variable Expressions in Mathematics
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Questions and Answers

What does the variable 'b' represent in the context provided?

  • The cost of each book Alex buys
  • The total cost of all the books Alex buys
  • The amount of money Alex has left
  • The number of books Alex buys (correct)

    • In the expression 50 - 7b, what does the '7b' part represent?

  • The total cost of all the books Alex buys (correct)
  • The original amount of money Alex had
  • The amount of money Alex has left
  • The cost of each book Alex buys

    • What does the variable 'c' represent in the context provided?

  • The extra time Bella spends on science
  • The number of classes Bella has (correct)
  • The time Bella spends on each class
  • The total time Bella spends studying this week

    • In the expression 2c + s, what does 's' represent?

    <p>The extra time Bella spends on science</p> Signup and view all the answers

    What are the variables used to represent the number of cookies and mini pies sold in the fundraiser example?

    <p>'c' for cookies and 'p' for pies</p> Signup and view all the answers

    In the expression 78 - 26 + 2c + 7p + 50, what does '78 - 26' represent?

    <p>Original amount of money before buying ingredients</p> Signup and view all the answers

    What do parentheses indicate in a variable expression?

    <p>Multiplication operation</p> Signup and view all the answers

    'Six more than a number' can be represented as:

    <p>$n + 6$</p> Signup and view all the answers

    '10 times six more than a number' can be represented as:

    <p>$10(n + 6)$</p> Signup and view all the answers

    'The opposite of 10 times six more than a number' can be represented as:

    <p>$-10(n + 6)$</p> Signup and view all the answers

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