Answer:
The fourth graph.
Step-by-step explanation:
In all other pictures the time would need to go backwards. Time can only move in one direction.
 
        
                    
             
        
        
        
Answer:
I'm not sure
Step-by-step explanation:
 
        
             
        
        
        
Answer:
0.150,0.595
Step-by-step explanation:
Given that at a self-service gas station, 40% of customers pump regular gas, 35% pump midgrade, and 25% pump premium gas. Of those who pump regular, 30% pay at least $30. Of those who pump midgrade, 50% pay at least $30. And of those who pump premium, 60% pay at least $30. 
                Regular gas          Midgrade         Premium gas      Total
Percent      40                            35                     25                   100
atleast 30   30%                         50%                 60%
a) The   probability that the next customer pumps premium gas and pays at least $30
=
b)        the probability that the next customer pays at least $30
= P(regular and pays atleast 30%)+P(premium and pays atleast 30%)+P(midgrade and       pays atleast 30%)
=