How tall is the building?! PLS HELP

1

step-by-step explanation:

it's the only multiple of both and the least

if x = 1, then the answer is 3.5

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c