Marshall learned to play a total of 4 pieces over the course of 2 weeks of piano lessons. In all, how many weeks of piano lessons will Marshall need before he will be able to play a total of 16 pieces? Assume the relationship is directly proportional.

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?