Using Formulas

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Using Formulas

• A formula shows the relationship between certain
  quantities.
• The number of miles driven divided by the number
  of gallons used is the miles per gallon (mpg)

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Using Formulas

• What would the mpg be if you drove 250 miles and
  used 20 gallons of gas

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Using Formulas

• The formula for distance traveled at a
  certain rate in given time.

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Using Formulas

• How far would you travel in a car that averaged
  70 mph and you traveled for 6 hours.

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Using Formulas

• How far would you travel in a car that averaged
  70 mph and you traveled for 6 hours.

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Using Formulas

• How far would you travel in a car that averaged
  70 mph and you traveled for 6 hours.

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Using Formulas

• Suppose you travel 162 miles in 3 hours. Use
  the formula to fin your average speed (rate)

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Using Formulas

• Suppose you travel 162 miles in 3 hours. Use
  the formula to fin your average speed (rate)

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Using Formulas

• Suppose you travel 162 miles in 3 hours. Use
  the formula to fin your average speed (rate)

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Using Formulas

• There are formulas in almost every field of Study
• Science
• Engineering
• Math
• Sports

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Example

• To determine your normal blood pressure divide
  your age by 2 and add 110
• Let the variable a represent age in the
  expression

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Evaluate

• If your age is 12

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