Natasha's gross pay is $3488 how much of her gross pay will be deducted for fica taxes? (the social security tax is 6.2% of gross pay. the medicare tax is 1.45% of gross pay)

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.