Country A imports 1,000 cars per month. After imposing a $50 per car tariff, imports fall to 800 cars per month. How much does Country A's government collect in tariff revenue

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

The data set represents the ages of players in a chess club. 27, 34, 38, 16, 22, 45, 54, 60. what is the mean absolute deviation of the data set?

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?