What is slope and how can you find it when given two ordered pairs

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

Convert 2000 swiss francs to dutch guilders

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base