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Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?