assume that x and y are whole numbers what is the solution of the system of inequalities x+y>4 3x+7y<21

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?

What is the ratio fraction form of 25: 9