Answer:
i think its b !!
Step-by-step explanation:
 
        
             
        
        
        
Answer: 
b) f(x)=-5x+100 
Step-by-step explanation:
i guessed ngl.. but it was right.
 
        
                    
             
        
        
        
Answer: Unlikely
Step-by-step explanation:
Given: The probability of choosing a penny from the 1980s from the bag of pennies without looking=
We know that the probability of any event lies between 0 and 1.
- If probability of occurring event is 0 then the event is impossible.
- If probability of occurring any event is 1 then the event certain.
- If probability of occurring any event lies between 0.5 and 1 then the event is said to be likely.
- If probability of occurring any event lies between 0 and 0.5 then the event is said to be unlikely.
Since, 0.075 lieas between 0 and 0.5, therefore the event is said to be unlikely.