Suppose that the number of cars manufactured at an automobile plant varies jointly as the number of workers and the time they work. If 220 workers can produce 198 cars in 5 hours, find the number of workers that can produce 189 cars in 6 hours.

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

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.