Bobby bought a dvd recorder for $280. now it's in sale for $220. find the percent of change in price. round to the nearest whole percent if necessary.

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

What is the interquartile range (iqr) of the data set represented by this box plot?