SOLUTION: Suppose that N=squareroot(x)+3 models the number of cases of an infection, in millions, of a disease x years from now.Approximately how many cases of the infection will there be 9

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Question 116239: Suppose that N=squareroot(x)+3 models the number of cases of an infection, in millions, of a disease x years from now.Approximately how many cases of the infection will there be 9 years from now? approximately how many years will there be 5 million cases
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
N=sqrt(x)+3
sqrt(9)+3
=3+3
=6 million cases
.
sqrt(x)+3=5
sqrt(x)=2
x=4 square each side
In 4 yrs there will be 5 million cases.
.
Ed