Tony invested $5,500 in a four-year cd that paid 4.8% interest, but later needed to withdraw $475 early. if the cd’s penalty for early withdrawal was three months’ worth of interest on the amount withdrawn, how much of a penalty did tony pay?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.

i have no clue at all sorry

step-by-step explanation: