Combine the like terms to make a simpler expression:

8r +7 -6r - 5 =

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?