Answer:
1. 2x+5=20
2. 5x+100=175
Explanation:
2 represents the cost of each round of pitch and since the number of pitches in unknown we put an x there. 5 is the money it costs to use the batting cage. 20 is the total money they used
5 represents the cost per person for skate rental and number of people is unknown so it is represented with x. 100 is the money it costs to rent the room. 175 is the total money used