8. the electrical conductance of a wire varies directly as the square of its diameter and
inversely as its length. the conductance of a wire 20 m long and 3 mm in diameter is
0.54 mho. if a wire has length 50 mm and diameter 5 mm, what is its conductance?

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

Can someone me out here number 4 plz