Suppose your class is planning a trip to a museum for 40 students. The cost of admission is $7 per person. The cost of renting a bus for the day is $180. Write an equation that represents the relationship between the admission, the bus rental, and the total cost.

The price of a box of 15 cloud markers is $12.70. the price of a box of 42 cloud markers is $31.60. all prices are without tax, and the price of the packaging is the same for any size. how much would 50 cloud markers in a box cost? write an equation which will tell the price p for the number n markers in the box.