Erik collects miniature cars. He has one large case that has 20 cars. He also has 3 same size, smaller cases filled with cars. Let n = the number of cars in each smaller case. Write an expression we can use to determine the number of cars Erik has in all no matter how many each case holds. * Your answer

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

When you answer this can you explain

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse. a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?