Salim bought a dvd recorder for $280.now it is on sale for $220. find the percent of change in the price .round to the nearest whole percent.

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

12 dolars one is cheaper becasue 3 pairs is 6 means is sock is 2 while the 12 is cheaper