1. The average weight of 8 people on a lift equals 138 lb. On the next floor a ninth person enters the elevator. How much weight can this person have to increase the average weight by 2 pounds?

2. Consider the following rectangular terrain. Find the total cost of the wire needed to fence the land, if the cost of the wire is $3.05 per meter.

90 m 140 m3 cm 2 cm 7 cm 7.2cm 10 cm