How many possible passwords can be made for a website that requires passwords to consist of 3 digits followed by 2 letters? (Not
2 answers:
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Answer:
90 g of water should be added and he will make 900 g of solution.
Step-by-step explanation:
Let x g be the amount of salt Ilya add to 810g of water to make 10% solution. Then 810+x g is the amount of new solution. Thus,
810+x - 100%,
x - 10%.
Mathematically,
So 90 g of water should be added and he will make 810+90=900 g of solution.
Vertex is 
and minimum value of f(x) is 12
Hope this helps
Hope this helps