Answer:
x = 40
Explanation:
You want x when y = 16, given that x = 2 when y = 1/25 and x is proportional to the square root of y.
Proportion
The given relation between x and y is ...
x = k√y . . . . . . x is proportional to the root of y
Application
The value of k is found from ...
k = x/√y = 2/√(1/25) = 10
Then for y = 16, we have ...
x = 10·√16 = 10·4
x = 40 . . . . . . . . when y = 16
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