The survival of certain larvae after hatching depends on the temperature (in degrees Celsius) of the surrounding environment ...

     The survival of certain larvae after hatching depends on the   temperature (in degrees Celsius) of the surrounding environment. The   following table shows the number of larvae that survive at various   temperatures. Find a quadratic model for these data. (Round your coefficients   to three decimal places.) (A graphing calculator is recommended.)   Temp. (°C)   Number   Surviving    20 40    21 47    22 52    23 61    24 64    25 64    26 68    27 67    28 64    29 62    30 61