12.Your bill at the fashion-palace can be expressed as C = T + 0.08T. What could the 0.08T represent?

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

other answer is correct. i had used the radius of the radius somehow. a website: