Please can you factorise this expression for me?? a(3u -v) plus a (u plus 2v) Please show working. thx in advance

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.

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?