it rained r inches on Saturday. On Sunday, it rained 0.15 inches less than twice Saturday's amount. If r represents the amount it rained on Saturday write the expression that can be used to find how much it rained on Sunday

Answer: X=2r-0.15

Step-by-step explanation:

Let X represent Sunday's amount of rainfall in inches. Because r represents Saturday's rainfall, you must put r into the equation, as Saturday's rainfall has crucial information needed to solve Sunday's rainfall. Because it rained. 15 inches less, and r represents the rain on Saturday, you can write r-0.15 because it is 0.15 inches less than Saturday's rainfall, which is r. Also, because the rainfall on Sunday was 0.15 inches less than TWICE Saturday's amount, you can show that by putting the 2 in front of the r, which represents double Saturday's actual rainfall, which gives you 2r-0.15.