The recreation center is hiring counselors for summer camp. They need four counselors for every 25 campers. If there are 140 campers, how many counselors will they need?

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.