Please solve the factor of
f(x)= -x^2 + 2x +3
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What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.

Which will form a composite function?