



 
Hi Chastity, I am going to use L and E as the two variables since lower case L looks too much like a one. The time available for the class is 2 hours or 120 minutes. E is the number of minutes used for the quiz and L is the number of minutes used for the lecture. Thus L + E = 120. One way to solve this problem is to use a table.
The ordered pairs so far are (20, 100) and (30, 90). Complete the table by adding two more rows and then complete the list of ordered pairs. I hope this helps, Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 