Arecipe calls for 2/3 cups of sugar for every 1/2 teaspoon of vanilla. what is the rate of cups per teaspoon?

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

What term makes it inconsistent y=2x - 4

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?