Answer:
Step-by-step explanation:
1.5 * 13 = 19.5 dollars
0.50 = 20 - 1.5x where 0.50 is the amount of money he has left and x is the number of bottles of water he buys
Answer:
x - 3
Step-by-step explanation:
Step-by-step explanation:

I believe its B. Stratified because the owner had to speak to ten individuals, meaning he divided it into smaller groups.