An **input-output table** is a two-column table in which the same rule is

applied to each input value resulting in the corresponding output values.

First, determine which operation to use.

Each cupcake has a group of 7 candy pieces.

To solve for 6, 8, and 12 groups of 7, use multiplication.

The middle column is added temporarily to show the rule being applied.

Number of Cupcakes | multiply by number of candies per cupcake | Total Number of Candy Pieces |

6 | 6 × 7 | 42 |

8 | 8 × 7 | 56 |

12 | 12 × 7 | 84 |

Below is the input-output table for 6, 8, and 12 of Marcy's cupcakes.

MARCY'S CUPCAKES

Number of Cupcakes | Total Number of Candy Pieces |

6 | 42 |

8 | 56 |

12 | 84 |

Find a rule that relates the numbers in the first column to the numbers in the second column.

Eric's Work Drive

Number of Days | rule | Total Number of Miles |

3 | multiply by 11 | 33 |

4 | multiply by 11 | 44 |

6 | multiply by 11 | 66 |

9 | multiply by 11 | 99 |

So, Eric drives 66 miles to work and back over 6 days.