A doctor suspects that one of her patients has a strep infection. A lab report shows that the patient's white blood cell count is 12,000 cells per microliter. The normal range for the white blood
cell count is between 4.5 billion and 10 billion cells per liter. Do the results indicate an infection?
First, convert the lab result from cells per microliter to cells per liter. The lab result shows 12,000
cells in one microliter of the patient's blood. How many cells are in one liter of the patient's blood?
(A liter contains 1,000,000 microliters.)
12,000
12,000,000
12,000,000,000
12,000,000,000,000
(Which answer above)

12,000,000,000

Step-by-step explanation:

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32