Every cubic millimeter of blood contains about 7500 white blood cells. A count less than 1500 above this number is still considered healthy. Is white cell count of 8750 considered healthy. Explain

Answer:The white cell count of 8750 is considered healthy.Step-by-step explanation:The question calls for any white cell count below 1500 above 7500 to be considered healthy. So, by adding the number 1500 to 7500 we find that the upper limit for being healthy is 9000 white blood cells per cubic millimeter of blood. This all can be represented mathematically with the following:If:[tex]7000 \leq  x \leq 9000[/tex]ThenWhite blood cell count 'x' is healthy.Else if:[tex]x < 7500[/tex] or [tex]x > 9000[/tex]ThenWhite blood cell count 'x' is not healthy.Now let's test the white cell count of 8750.Does it fall between 7500 and 9000?[tex]7500 \leq 8750 \leq 9000[/tex]This checks out so the answer is yes: White blood cell count '8750' is healthy.