Somewhere in the text, it must say that x = 2 and y = -1 or else, the values just seem made up out of thin air.
19,765 but couldnt u just use a calculator??
Sale price = $450
original price = 25%y
dicount = +20%
solution = $450 × 45%
= $202.5
= $652.5
i am a mathematics teacher. if anything to ask please pm me
