I need help on these questions

Find the inflection points of f(z) = 0.5x + 31 - 12x2+ 3. (Give your answers as a comma separated list, e.g., 3,-2) inflection points = preview answers Problem 10. (1 point) The population of a fish farm in t years is modeled by the equation 1100 P(t) - 1 + 4e 0.55t Answer the following a. What is the initial population of fish? The initial population of fish was b. To the nearest whole number, what will the fish population be after 4 years? The fish population will be approximately after 4 years c. To the nearest tenth, how long will it take for the population to reach 925? It will take approximately years for the population to reach 925 d. What is the carrying capacity for the fish population? The carrying capacity is fish