If 30 gallons of water weighs 249 pounds, what is the weight of 7 gallons of water in pounds?

All per-unit concepts rely on ratios,meaning,to provide a type of measurement

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?