Serena drove 40km on 3l of gasoline . which proportion would determine how far she can travel on a full 50 l tank of gasoline

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

The difference between tax advoidance and tax evasion

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi