Which coupon will save Maddie more money on a surfboard originally priced at $130 $75.00 off or 50% off

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?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Which expression gives you the distance between the points (5,1)and(9,-6)