3x^3 -5x^2 -x+3 when x=4 help I'm stuck on this

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x

Solve for n. round to the tenths place, if necessary. 14.2 cups of flour6 loaves of bread= 20 cups of flour n