What is the value of f(x) = 3x - 12 for x = 9

If f(x) = 3x - 12 and x = 9

then substitute 9 in place of x

f(9) = 3(9) - 12

f(9) = 27 - 12

f(9) = 15

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.