Work out how many litres of water she saves by having a shower instead of a bath
1 answer:
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Remember that 
is 
. We know form our problem that 
and 
, so:
Now, to find
, we just need to evaluate at 3. In other words, we are going to replace 
with 3:
We can conclude that the correct answer is <span>C.6(3) – 4 + 3^2 </span>
Now, to find
We can conclude that the correct answer is <span>C.6(3) – 4 + 3^2 </span>