I can’t help you with the first one because I can’t see the choice. I can help you with the second. For the second one, you can have two ways of doing this:
-225 - (225 x 20% or 0.20) -225 x (100% - 20%)
However you do it, your answer should be.. *calculating intensifies* 180. So your answer should be $180 for part B.
For part C, they want to know the cost of the coat PLUS the boots during the sale.
So you can do either this:
(225 + 130) x 80% *cuz 100% - 20% is 80%. Don’t ask where the 100% came from cuz I learned this months ago and my brain hates me so-*
Or this: (225 x 80%) + (130 x 80%)
Either way, your answer would have come out to.. *more calculating intensifies*
The goal is to find the legs of the right triangle, so you can find the hypotenuse. The hypotenuse is the distance between the two points. See the attached image.
