mick paid $2.94 in sales tax on an item that cost $42.00 before tax. At the rate, how much would he pay in sales tax for and item that costs $58.00 before tax

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?