IDNLearn.com provides a seamless experience for finding and sharing answers. Find the information you need quickly and easily with our comprehensive and accurate Q&A platform.

The rate (in mg carbon/m³/h) at which photosynthesis takes place for a species of phytoplankton is modeled by the function P = 110I/(I² + I + 9) where I is the light intensity (measured in thousands of foot-candles). For what light intensity is P a maximum?