{a number line from negative 10 to 10 with tick marks every 1 unit. a closed dot is at negative 3 with a ray pointing left from negative 3.] the variable must have a coefficient that is a negative fraction.

Draw a number line from -10 to +10 with tick marks (division lines) every 1 unit.  Now find the origin (in the middle of the line you have just drawn).  Now move your pencil point 3 units to the left and plot a dark (closed) dot there.  Then draw a ray from that closed dot to the left.  Apparently we cannot extend that ray beyond -10.

(-10,-3] would be my representation of this situation.

Ibelieve the answer is pollen contains the sperm cell because the flower only has female parts and the pollen is the male part of the flower i believe

F(2) = 0f(-2) = 0due to the way the equation is, answers with 0 are correct.