A crowd-funding project has received $16,770, which is $1230 less than 90% of the goal amount. What is the goal amount?

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

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1

i don't think there is enough