Answer:
I think A
Step-by-step explanation:
Because if you change it from (43 + 60) + 40 to (60 + 40) + 43 = 143
You automatically know it is 143 because 60 + 40 is 100 + 43 = 143
And it wouldn't be D because that is already in a easy way the solve. The others looked to complicated to even attempt so it has to be A.
Did this help!!??
 
        
             
        
        
        
Answer:
3x + 4
Step-by-step explanation:
 
        
             
        
        
        
Answer:
There's a 39% chance.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
7 f(t)
Step-by-step explanation:
So, our f(t) is the number of liters burned in t days. If t is 1, f(t)=f(1) and so on for every t. 
w(r) id the number of liters in r weeks. This is, in one week there are w(1) liters burned.
As in one week there are 7 days, we can replace the r, that is a week, by something that represents 7 days. As 1 day is represented by t, one week can be 7t (in other words r = 7t). So, we have that the liters burned in one week are:
w(r) = w[7f(t)]
So, we represented the liters in one week by it measure of days. 
So, we can post that the number of liters burned in 7 days is the same as the number of liters burned 1 day multiplied by 7 times. So:
w (r) = w[7 f(t)] = 7 f(t)
Here we hace the w function represented in terms of t instead of r.
 
        
             
        
        
        
9514 1404 393
Answer:
   p = -9 5/9
Step-by-step explanation:
Undo what is done to p.
Multiply by 2.
   p +10 = 4/9
Subtract 10.
   p = 4/9 -10
   p = -9 5/9