One and seven ninths minus three and one third

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.

Find the area of a parallelogram with base 15 yards and height 21 2/3

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?