The number of fish (f) in a fish tank increases when the number of algae blooms (a) decreases. Write the correct equation for this scenario, and solve for the number of fish when there are 4 algae blooms.
 Algae blooms fish.
 10 10
 25 4
 a) f = 1a; f = 4
 b) f = 1a; f = 4
 c) f = 100 over a; f = 25
 d) f = 100 over a; f = 400