# Module 5-5.3 Proportions and Percent

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2016-04-18 03:03

## Section

Question | Answer |
---|---|

Proportion | An equation that states that two ratios are equivalent. |

Ratio | A comparison of two quanities by division. |

Percent | A ratio that compares a part to the whole using 100. |

Expression | A mathematical phrase containing variables, constants, and operation symbols. |

Percent Increase | describes how much a quantity increases in comparison to the original amount. |

Formula | Percent Change= Amount of Change/ Original Amount |

Steps: | 1. Substitute values. 2. Divide. 3. Write as a percent and round. |

Percent Decrease | describes how much a quantity decreases in comparison to the original amount. |

Leeson of Variables | A variable doesn't have to be the letter x. |

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