Abiologist created the following graph to show the relationship between the temperature of water (x), in degrees celsius, and the number of insect larvae (y) in the water:

graph of y equals minus 2 times the square of x plus 20 times x plus 400

what do the x-intercepts of the graph represent? (1 point)

there were 20 larvae at 0 degrees celsius.
there were 10 larvae at 0 degrees celsius.
the water has no larvae at −10 degrees celsius and 20 degrees celsius.
the water has maximum larvae at −10 degrees celsius and 20 degrees celsius.