### Functions

Functions change a number using mathematical operators ( like +, - x and ÷ ) and other numbers.

e.g. a simple function of **+5** changes:

3 to 8 | (3 + 5 = 8) | |

8 to 11 | (8 + 5 = 11) | |

0 to 5 | (0 + 5 = 5) | |

-5 to 0 | (-5 + 5 = 0) | |

-8 to - 3 | (-8 + 5 = -3) |

a simple function of **x3** changes:

3 to 15 | (5 x 3 = 15) | |

8 to 24 | (8 x 3 = 24) | |

0 to 0 | (0 x 3 = 0) | |

-5 to -15 | (-5 x 3 = -15) | |

-8 to - 24 | (-8 x 3 = -24) |