To write the pair of linear equations that model the situation described:
-
The first equation represents the total number of Student Council members participating in the activities of picking up litter and cleaning hallways. Since all 25 members are involved, we have: \[ p + c = 25 \] where \( p \) is the number of members picking up litter and \( c \) is the number of members cleaning the hallways.
-
The second equation represents the total amount of money raised. Each member who picks up litter earns $15, and each member who cleans the hallways earns $10. To raise a total of $300, we have: \[ 15p + 10c = 300 \]
Putting these two equations together, we get the following system: \[ \begin{aligned}
- & \quad p + c = 25 \
- & \quad 15p + 10c = 300 \end{aligned} \]
Thus, the correct response is: \( p + c = 25; \quad 15p + 10c = 300 \) or in words, \( p \) plus \( c \) equals 25; \( 15p \) plus \( 10c \) equals 300.