#9: there is a park by yessenia's house that looks like the picture below. what is the area of the park in square meters?
captionless image
#10: the toll rates for crossing a bridge are $6.50 for a car and $10 for a truck. during a two-hour period, a total of 187 cars and trucks crossed the bridge, and the total collected in tolls was $1,338. solving which of the following systems of equations yields the number of cars, x, and the number of trucks, y, that crossed the bridge during the two hours?
system 1
system 2
system 3
system 4