A crawler crane has two tracks. Each sits on a patch of ground 15 feet long by 2 feet wide. What is the area of the ground that is in contact with the two tracks? The total area of the ground contact is square feet.

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Find dy/dx using implicit differentiation ln(20+e^xy)=y