The scatter plot shows the price, in cents, of a postage stamp used to mail a letter in United States for the years from 1958 to 2014. Also shown is the line of fit to model the dataThe equation of the line of fit is y = - 0.71 + 0.86x , where represents the predicted price, in cents, of a stamp and x represents the number of years since 1958. (S& S-ID.3.8-9 )PLS HELP!!

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?