European car can travel 8.3 kilometers on one liter of gas. Express unit rate in miles per gallon rounded to the nearest tenth of a mile​

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20