If f(x) varies directly with x and f(x)=4 when x=12 then what is the value of f(x) when x=60 a: 5 b: 20 c: 180 d: 300

step-by-step :

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step-by-step explanation:

just for that im not answering

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

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft