Brainliest if correct

Answer:
C = 50P
The cost for 19 people is $950.
Step-by-step explanation:
For 1 person, C = 50
For 2 people, C = 50 × 2
For 3 people, C = 50 × 3
...
For P people, C = 50 × P = 50P
The equation is
C = 50P
For 19 people, P = 19.
C = 50 × 19
C = 950
The cost for 19 people is $950.