2. Trouvaughn bought b bags of oranges, which cost 80 cents per bag. If Trouvaughn paid with a
ten-dollar bill, which expression represents the amount of change he'll get?**

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?