Answer:
Step-by-step explanation:
for this problem we have to
3330/18=185 toothpicks for each row
 
        
                    
             
        
        
        
Answer: 2.01
Explanation: I rounded 22.11 two 22. So when you divide it by eleven is 2. Then you divide 11 by 11. Which is one, and it seems it was in the hundreths place so you add a cero before the one.
 
        
             
        
        
        
Answer:
B and F
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
£110
Step-by-step explanation:
We know how much time it takes for a boiler and a radiator, and we need to know how much it will cost for 1 boiler and 4 radiators. We have an initial cost of £30, and since hes doing a boiler - which we know takes an hour - we can already add £20 for a start of £50. 
Now, there are 4 radiators, that take 45 minutes each. We need to use this equation:

We divide by 60 because there are 60 minutes in an hour, and he charges by hour. So:

Now, to find out how much to charge, we need to figure out how much to add to the £50. Since it's £20 an hour, and it takes 3 hours to do the 4 radiators, we need to multiply:

Now we add our totals for a grand total of...

 
        
             
        
        
        
Y=2x+1 I think this is correct but I don’t know how to do equations very well