It’s 24x because it’s left to right so you do (3x+1 first which is 4x) and then (4x-1 which is 3x) and then 4x(3x) is 12x and then multiply it by 2 which is 24x
Answer:
1) Mucous membranes of the respiratory, genitourinary, and intestinal tracts provide a habitat for numerous bacteria. 2) Streptococcus, Corynebacterium - respiratory tract 3) Lactobacillus - vagina 4) Clostridium, Enterics - intestinal tract
Explanation:
MRI scanner or other imaging device
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